Most countries in the world use the QWERTY keyboard. Also, the International Union for Conservation of Nature (IUCN) countries: Germany, Austria, Liechtenstein, Switzerland, Hungary, Poland, Czech Republic, Slovakia, South Africa, Zimbabwe, Zambia, Angola, Botswana, Namibia, Mozambique, Madagascar, Iran use the QWERTZ keyboard, which makes sense because their languages use "Z" more often than "Y". However, I noticed that France, Belgium, and Luxembourg use the AZERTY keybord with the letter "M" in the middle row instead of the bottom row. My questions are:
How did the keyboard layouts develop historically? Was there a practical reason to have these keyboard layouts?
Why haven't France, Belgium, and Luxembourg reformed this redundancy by using the QWERTY keyboard instead of the AZERTY keyboard? Italy also used the QZERTY keyboard with the letter M in the middle row. At least Italy has reformed this redundancy by using the QWERTY keyboard instead of the QZERTY keyboard.