During the American revolution, the Patriots side was heaviliy outnumbered by The British. On top of that, the patriot's weapons were also inferior.
In such a desperate moment, the patriots decided to obtain any help that they can, by opening an opportunity for African Americans (from both northern and southern sides) to join the Revolution army in order to achieve freedom from the British.
B) John Hancock
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John Hancock becomes president of Congress. On this day in 1775, John Hancock is elected president of the Second Continental Congress. John Hancock is best known for his large signature on the Declaration of Independence, which he jested the British could read without spectacles.Nov 13, 2009
The Freeman's Bureau. Hope this helped.
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I think it is expressed, implied, and inherent powers don't already give Congress plenty with which to keep itself busy, the Constitution also assigns the legislative branch several important non-legislative functions