Jim crow was not a real person but it was a phrase "Jim Crow" has often been attributed to "Jump Jim Crow<span>", a song-and-dance c</span>aricature<span> of blacks performed by white actor Thomas D.Rice</span><span> in b</span>lackface<span>, which first surfaced in 1832 and was used to satirize A</span>ndrew Jackson<span>'s populist policies</span>
Answer:
J. Robert Oppenheimer & Albert Einstein
Explanation:
It encouraged the use of rich farmland and contact between cities.
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:
