Answer:
D.
Explanation:
Basic Answer: In the late 1800s, workers organized unions to solve their problems. Their problems were low wages and unsafe working conditions. ... First, workers formed local unions and later formed national unions. These unions used strikes to try to force employers to increase wages or make working conditions safer.
B is correct answer.
On B it saids, It began by 1890 and it continued until 1947 is the best describes the history of segregation in professional baseball.
Hope it helped you.
-Charlie
Answer:
The creation of modern science
Explanation:
The scientific revolution started in the XVI century when Copernicus discovered that the earth rotated around the sun and not the opposite this led to reconceive the world as it was not the center of the universe as it was believed.
The scientific revolution brings advances in mathematics, physics and the creation of modern science.
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