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There were a couple of notable pharaohs:

  • Thutmose III, born 1481 BC, reigned 1479–1425 BC, was only about 2 year old when he became pharaoh. His co-regent was his stepmother Hatshepsut, but she continued as co-ruler / pharaoh until her death when Thutmose was 22 years old. According to Wikipedia, Thutmose is "Widely considered a military genius by historians".
  • Amenhotep III, born about 1388 BC, regnal dates are disputed but he was probably around 6 to 12 years old when he became pharaoh. His reign "was a period of unprecedented prosperity and artistic splendour, when Egypt reached the peak of its artistic and international power."

In Iran,

  • Shapur II, born 309 AD, reigned 309-379 AD, was an infant who became Iran's longest reigning monarch. "His reign saw the military resurgence of the country, and the expansion of its territory, which marked the start of the first Sassanian golden era."

For Pontus,

  • Mithridates VI, born 134 BC, reigned 120–63 BC, was 14 years old. "Mithridates is remembered as one of the Roman Republic’s most formidable and successful enemies,"

In Europe,

  • David II, born 1324, King of Scotland from 1329 to 1371, was 5 years old. His reign had its ups and downs but "By the time of his death, the Scottish monarchy was stronger, and the kingdom and royal finances more prosperous than might have seemed possible."
  • Edward III, born 1312, reigned 1327-77, was 14 years old when he became king with Roger Mortimer as the effective ruler. In 1330, the young king seized power and had Mortimer executed. "Edward III transformed the Kingdom of England into one of the most formidable military powers in Europe. His long reign of 50 years was the second longest in medieval England and saw vital developments in legislation and government"

There were a couple of notable pharaohs:

  • Thutmose III, born 1481 BC, reigned 1479–1425 BC, was only about 2 year old when he became pharaoh. His co-regent was his stepmother Hatshepsut, but she continued as co-ruler / pharaoh until her death when Thutmose was 22 years old. According to Wikipedia, Thutmose is "Widely considered a military genius by historians".
  • Amenhotep III, born about 1388 BC, regnal dates are disputed but he was probably around 6 to 12 years old when he became pharaoh. His reign "was a period of unprecedented prosperity and artistic splendour, when Egypt reached the peak of its artistic and international power."

In Iran,

  • Shapur II, born 309 AD, reigned 309-379 AD, was an infant who became Iran's longest reigning monarch. "His reign saw the military resurgence of the country, and the expansion of its territory, which marked the start of the first Sassanian golden era."

For Pontus,

  • Mithridates VI, born 134 BC, reigned 120–63 BC, was 14 years old. "Mithridates is remembered as one of the Roman Republic’s most formidable and successful enemies,"

In Europe,

  • David II, born 1324, King of Scotland from 1329 to 1371, was 5 years old. His reign had its ups and downs but "By the time of his death, the Scottish monarchy was stronger, and the kingdom and royal finances more prosperous than might have seemed possible."

There were a couple of notable pharaohs:

  • Thutmose III, born 1481 BC, reigned 1479–1425 BC, was only about 2 year old when he became pharaoh. His co-regent was his stepmother Hatshepsut, but she continued as co-ruler / pharaoh until her death when Thutmose was 22 years old. According to Wikipedia, Thutmose is "Widely considered a military genius by historians".
  • Amenhotep III, born about 1388 BC, regnal dates are disputed but he was probably around 6 to 12 years old when he became pharaoh. His reign "was a period of unprecedented prosperity and artistic splendour, when Egypt reached the peak of its artistic and international power."

In Iran,

  • Shapur II, born 309 AD, reigned 309-379 AD, was an infant who became Iran's longest reigning monarch. "His reign saw the military resurgence of the country, and the expansion of its territory, which marked the start of the first Sassanian golden era."

For Pontus,

  • Mithridates VI, born 134 BC, reigned 120–63 BC, was 14 years old. "Mithridates is remembered as one of the Roman Republic’s most formidable and successful enemies,"

In Europe,

  • David II, born 1324, King of Scotland from 1329 to 1371, was 5 years old. His reign had its ups and downs but "By the time of his death, the Scottish monarchy was stronger, and the kingdom and royal finances more prosperous than might have seemed possible."
  • Edward III, born 1312, reigned 1327-77, was 14 years old when he became king with Roger Mortimer as the effective ruler. In 1330, the young king seized power and had Mortimer executed. "Edward III transformed the Kingdom of England into one of the most formidable military powers in Europe. His long reign of 50 years was the second longest in medieval England and saw vital developments in legislation and government"
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There were a couple of notable pharaohs:

  • Thutmose IIIThutmose III, born 1481 BC, reigned 1479–1425 BC, was only about 2about 2 year old when he became pharaoh. His co-regent was his stepmother Hatshepsut, but she continued as co-ruler / pharaoh until her death when Thutmose was 22 years old. According to Wikipedia, Thutmose is "Widely considered a military genius by historians".
  • Amenhotep IIIAmenhotep III, born about 1388 BC, regnal dates are disputed but he was probably around 6 to 12 yearsaround 6 to 12 years old when he became pharaoh. His reign "was a period of unprecedented prosperity and artistic splendour, when Egypt reached the peak of its artistic and international power."

In Iran,

  • Shapur IIShapur II, born 309 AD, reigned 309-379 AD, was an infant who became Iran's longest reigning monarch. "His reign saw the military resurgence of the country, and the expansion of its territory, which marked the start of the first Sassanian golden era."

For Pontus,

  • Mithridates VIMithridates VI, born 134 BC, reigned 120–63 BC, was 14 years old. "Mithridates is remembered as one of the Roman Republic’s most formidable and successful enemies,"

In Europe,

  • David IIDavid II, born 1324, King of Scotland from 1329 to 1371, was 5 years old. His reign had its ups and downs but "By the time of his death, the Scottish monarchy was stronger, and the kingdom and royal finances more prosperous than might have seemed possible."

There were a couple of notable pharaohs:

  • Thutmose III, born 1481 BC, reigned 1479–1425 BC, was only about 2 when he became pharaoh. His co-regent was his stepmother Hatshepsut, but she continued as co-ruler / pharaoh until her death when Thutmose was 22 years old. According to Wikipedia, Thutmose is "Widely considered a military genius by historians".
  • Amenhotep III, born about 1388 BC, regnal dates are disputed but he was probably around 6 to 12 years old when he became pharaoh. His reign "was a period of unprecedented prosperity and artistic splendour, when Egypt reached the peak of its artistic and international power."

In Iran,

  • Shapur II, born 309 AD, reigned 309-379 AD, was Iran's longest reigning monarch. "His reign saw the military resurgence of the country, and the expansion of its territory, which marked the start of the first Sassanian golden era."

For Pontus,

  • Mithridates VI, born 134 BC, reigned 120–63 BC. "Mithridates is remembered as one of the Roman Republic’s most formidable and successful enemies,"

In Europe,

  • David II, born 1324, King of Scotland from 1329 to 1371. His reign had its ups and downs but "By the time of his death, the Scottish monarchy was stronger, and the kingdom and royal finances more prosperous than might have seemed possible."

There were a couple of notable pharaohs:

  • Thutmose III, born 1481 BC, reigned 1479–1425 BC, was only about 2 year old when he became pharaoh. His co-regent was his stepmother Hatshepsut, but she continued as co-ruler / pharaoh until her death when Thutmose was 22 years old. According to Wikipedia, Thutmose is "Widely considered a military genius by historians".
  • Amenhotep III, born about 1388 BC, regnal dates are disputed but he was probably around 6 to 12 years old when he became pharaoh. His reign "was a period of unprecedented prosperity and artistic splendour, when Egypt reached the peak of its artistic and international power."

In Iran,

  • Shapur II, born 309 AD, reigned 309-379 AD, was an infant who became Iran's longest reigning monarch. "His reign saw the military resurgence of the country, and the expansion of its territory, which marked the start of the first Sassanian golden era."

For Pontus,

  • Mithridates VI, born 134 BC, reigned 120–63 BC, was 14 years old. "Mithridates is remembered as one of the Roman Republic’s most formidable and successful enemies,"

In Europe,

  • David II, born 1324, King of Scotland from 1329 to 1371, was 5 years old. His reign had its ups and downs but "By the time of his death, the Scottish monarchy was stronger, and the kingdom and royal finances more prosperous than might have seemed possible."
1
source | link

There were a couple of notable pharaohs:

  • Thutmose III, born 1481 BC, reigned 1479–1425 BC, was only about 2 when he became pharaoh. His co-regent was his stepmother Hatshepsut, but she continued as co-ruler / pharaoh until her death when Thutmose was 22 years old. According to Wikipedia, Thutmose is "Widely considered a military genius by historians".
  • Amenhotep III, born about 1388 BC, regnal dates are disputed but he was probably around 6 to 12 years old when he became pharaoh. His reign "was a period of unprecedented prosperity and artistic splendour, when Egypt reached the peak of its artistic and international power."

In Iran,

  • Shapur II, born 309 AD, reigned 309-379 AD, was Iran's longest reigning monarch. "His reign saw the military resurgence of the country, and the expansion of its territory, which marked the start of the first Sassanian golden era."

For Pontus,

  • Mithridates VI, born 134 BC, reigned 120–63 BC. "Mithridates is remembered as one of the Roman Republic’s most formidable and successful enemies,"

In Europe,

  • David II, born 1324, King of Scotland from 1329 to 1371. His reign had its ups and downs but "By the time of his death, the Scottish monarchy was stronger, and the kingdom and royal finances more prosperous than might have seemed possible."