I'm assuming because this is under the history thread, it's dealing with the U.S. Senate. There are two main political parties in the U.S. which are Democratic and Republican- but there is also an Independent party, just not as big. Representatives are people who represent a certain party in, I believe, the Senate. So when it says "proportional", it's most likely referring to the fact there is an equal amount of representatives who are under the two big parties- the Democratic or Republican.
Answer:
These three constitutional amendments
Explanation:
These three constitutional amendments abolished slavery and guaranteed equal protection of the laws and the right to vote. Passed by Congress January 31, 1865. Ratified December 6, 1865.
The general structure in 1750 is well off farmers master artisans and craftsmen, doctors, and lawyers
His name was George Catlin.
Hope this helps!
