What is the main
difference between a state
and a territory?

There is a difference between states and territories though they are both concerned with land. A country is a vast expanse of land and it can be quite difficult to manage such vast expanses when it comes to governing purpose.  A territory is characterized by its low population and by maintaining a distance from the national government. • When a country expands its borders, the new area gained is usually referred to as a territory.

Explanation: I googled it

the main reason the us senate rejected the treaty of versailles was because "european nations wanted to punish germany"

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