I understand the first minuscule script appeared in the Latin alphabet in the 3rd century - "New Roman cursive".
My question is: when did a script used both minuscule and majuscule letters in the same text, for the first time?
Clear capital letters and spaces between words – norms we take for granted – became standard in Carolingian minuscule [...]
So it was the first time both capitals and minuscules were used in a standard way (instead of ocassionally as with previous minuscule scripts). I don't think it would be possible to pinpoint exactly which was the first text ever to use them together, though.