What does the d in d-day mean

Which of the following led to a continuation of the treatment in the excerpt above? a)the brutality of the trans-atlantic african slave trade. b)spanish repression after violent native uprisings in new spain during the 16th century. c)european competition to quickly establish colonial holdings in the new world. d)the reliance of the spanish on native americans to provide labor under the encomienda system.

What are the purposes of a political cartoon? check all that apply.

What was one effect of the emancipation proclamation on african americans in the north?