<span>Clovis was one of many Frankish kings and created lots of them, first to create a big kingdom- MEROVINGIAN
Charlemagne created an empire a couple hundred years later probably did the same thing but he was succesesful-</span>
The differences in how the war affected each nation, with the US having less destruction and casualties compared to the Soviet Union is your best answer.
Another reason is the fact that they used two seperate types of government, and each tries to impose it's own kind on other countries in an effort to be able to be the "leader of the world".
hope this helps
Here are the innovations in farming methods that created in 1830s :
- steel-tipped plow used to break out the soils without the tools having to be stuck in the ground
- Mechanical reaper, to cut out grass more efficiently
- Thresher, which is created to speed up grain's harvesting process
