Ironing out disagreements concerning the office of chief executive was the main task of the Committee on Unfinished Portions. This committee also recommended the four-year presidency, which is more than one term and also recommended that the vice president be the ex-officio President of the Senate.
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or answer c is what you are looking for
They didn't. At the time that Jesus lived the Romans had very little dealings with him. In fact they didn't even know who he was. That's why when it came time to arrest Jesus they had to have someone (Judas) point him out. It was only a certain group of Jewish authorities who perceived Jesus as a threat and so acted against him.
No, Christopher Columbus did not go to North America.
Establishing causation is incredibly helpful for historians to understand the past, since simply understand that certain events took place doesn't necessarily make you understand how these events took place, and why. Causation allows you to put events in context and to determine why people may have acted the way they did.