The correct answer is A.
The Chinese Exclusion Act of 1882 was a United States federal law prohibiting all immigration of Chinese labor.
From 1870 to 1880, Chinese immigrants represented the largest group of nonwhite immigrants in the U.S. at the time.
The Chinese immigrants were mostly men and they provided cheap labor, often working on farms, railroad construction and in low-paying industrial jobs. They were seen as unfair economic competition by many Americans. They were blamed for low wages and reduced job opportunities and for bringing drugs, crime and prostitution to the States.
<em>To many, they posed an economic danger as they held job taken away from white Americans.</em>
Aristarchus’ only extant treatise is “On the Sizes and Distances of the Sun and Moon.” In it he calculated the diameter of the Sun as about seven times the diameter of the Earth, thus estimating the Sun’s volume as about 300 times the volume of the Earth
Francisco Pizarro led the conquest of the Inca Empire.
The most important factor from the options that lead to radicalized political parties was The Great Depression of 1929 (C).
The Wall Street Crash of 1929 led to a chain reaction not only in the U.S. but in many European countries as well. In the worst moments of the period, 22 to 23% of the American workforce, and 44% of German's workforce didn't have a job.
Due to the crisis, many American creditors charged loans made throughout the world; American companies stopped investing in other countries.
This generalized crisis, unemployment, and increasing misery of the population created a fertile soil on which fascist and nazi political figures fed.
