America signed the deceleration of independence July 4, 1776
This statement is false. Sumerians did not trade because they were curious about other cultures, but because they needed to acquire more resources from neighbouring countries in order to survive.
The correct answer is Martin Luther King JR.
Martin Luther King JR advocated for non-violent resistance to Jim Crow laws and believed that the Civil Rights movement could only be successful if it was nonviolent.
The others on the list disagreed.
Answer: As in the clauses: Article 1, Section 2, Clause 3:
“Representatives and direct Taxes shall be apportioned among the several States which may be included within this Union, according to their respective Numbers, which shall be determined by adding to the whole Number of free Persons, including those bound to Service for a Term of Years, and excluding Indians not taxed, three fifths of all other Persons.”
They counted slaves as less than one person, the "other person" are slaves. The "excluding Indians not taxed" part, means that they were considered part of US only if they paid the taxes.