Because there are only two senators who must represent a whole state.
It was one of those things that was very short sighted. It demanded that Germany make payment to the victors (most notably England and France) for the cost of the war.
How was Germany going to do that, they asked. Germany was beaten and her economy was a shambles, to say nothing of the moral of the country. It made it easier for Hitler to take power in the early 30s.
The success of "Manifest Destiny" encouraged imperialists' ambitions
I believe that they managed the Colonial war effort and moved incrementally towards independence