Maybe this can help, this is just something I found i believe the size varies because of the population in that district
The cotton gin made it easy for slaves to separate seeds out of the cotton. However, it it increased slave usage all over. It actually increased the use of slavery. The cotton gin just made one part of a slaves job quicker and easier.
In the East...The emperor controlled church and government.
In the West...The pope claimed he had religious and political authority over all of Europe.