Moreover, colonies of the UK like India, have not adopted toilet paper during the British Raj. So what was used for anal cleansing before 1900? What fills up this missing part in the history of anal cleansing?
Since corn was originally cultivated only in the Western Hemisphere, it's likely that corncobs was something the European/American settlers adopted from the indengious peoples there. But the rags and newspapers mentioned were probably commonly used in Europe, and brought by the Europeans to the New World.
In the Boy Scouts, I was taught to used dried leaves when out in the woods on a hike, and that such was the practice of Native Americans, and presumably early American Settlers.
I also found a few references to the use of stones by Native Americans, but nothing I can cite as a reliable source.
I don't think bidets were ever as popular in the UK as we believed. I've heard from a lot of people in the UK and they often say they don't have one nor do they know anyone that does have one. I think Crocodile Dundee put it in the heads of people that everyone in the UK has a bidet.
Bidets are more common in the Middle East, as well as Italy. The newer Japanese toilets seem to be more popular in Japan, China, etc. And it seems over the past few years they are getting quite popular in the US and Canada.