Factor 1: Who decides to run for office and what advantages candidates have over one another.
Factor 2: Incumbency. Usually the incumbent (the person already serving in the office) has a large advantage over challengers, unless negative events have the voters wanting to get rid of incumbents.
Factor 3: The way congressional districts are drawn. There have been court cases recently about "gerrymandering" -- attempts by a party in power to draw district boundaries in ways that will serve to perpetuate that party's power.
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Need food, water, shelter, money, and pills
Answer:
Christopher Columbus
In 1492, Christopher Columbus sailed the ocean blue. He discovered some Islands in the Caribbean and he discovered South America.
The main benefit of slavery to governments in the colonies is that it provided a system of almost entirely free labor, since the slaves were not compensated for their work, which took place primarily in fields. <span />