Answer:
Well supposedly unlike the White House, all of the Senate's seats are never, ever up for election, not at the same time.
Explanation:
<em>Continuous Body: </em><em> a legislative body, such as the U.S. Senate, that achieves stability by staggering the terms of its members to prevent more than a minority of seats from changing in a single election.</em>
Advances in industrialization and urbanization causes a population rise because several people from other areas tend to come to these places for getting jobs and also for staying. With industrialization, comes the chance for people to get jobs and so people from underdeveloped areas tend to come into these areas.
Bison but are you taking about the Native Americans or the settlers, but I think the answer is the same for both
I believe Merchants had the most power.