<span>the employment of immigration labor tended to drive down workers wages.</span>
Luther KIng referred to the Proclamation of Emancipation that in 1963 when he pronounced the speech called I Have a Dream, this fact was 100 years old. But after a century they faced a harsh reality, that the black was not yet free. Some ask those who fight for civil rights that when they are satisfied? and one of his answers was: We will not be satisfied as long as the basic mobility of the black is from a smaller ghetto to a larger one.
Answer:
The beginning of the Precambrian period starts with the formation of Earth about 4.5 billion years ago and ends at the first sign of complex life about 540 million years ago. Though the Precambrian Period is often referred to as a period, it's actually the only supereon, which means that it spans multiple eons.
Explanation: