Because of the issue of slavery. the North and the South were divided on that issue. The South wanted slaves and the North didnot
Answer :main factor was political: 100 years war, turning back to secular power instead of spiritual, religious was conflict of popes with secular power instead of spiritual,. Hard to control economy in all states. Black plague. The papacy was able to dominate kings and secular rulers during the High Middle Ages.
Explanation: good day
The answer it’s number 4 “implied power”
Im guessing they were called "wagon trains". Apologies if i'm incorrect!