When Pope Leo III crowned Charlemagne on Christmas Day in 800, what was the long term effect?

Charlemagne established a carefully planned feudal system.
Charlemagne appointed missi dominici as ambassadors.
It reinforced the Church as a political power in the Empire.
Buffer zones were established around the empire.

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.

1.d 2.a c.!

this act gave the federal government the power to relocate any native in the east to territory west of the mississippi river.