The population of the US increased during these years is the correct answer.
As the representation in House of Representatives is based on population, the Congress increased the number of representatives accordingly with increase in population. In first House of Representatives of 1789, there were only 65 members which increased to 435 in 1913. The number is constant now due to the Permenant Apportionment Act of 1929 which fixed the number of seats at 435.
You forgot the options friend
Wampum was similar to modern money because you could exchange it for goods (for example skins), but it's also different because it couldn't be preserved or borrowed as a loan. The beading was collected mainly from the beaches and everyone could have them, but the real value was represented by the belt with beading which also represented most important events for the natives.