To my knowledge it's B: Marxism. I hope this helped!
During the early 1800s, America was a young nation whose political and economic structure was not as strong as it is today. As a result America had to face crop, insuarance and banking failures together with drops in the price of the cotton and the stock market and a crisis of credit and cash. It brought what was known as the economic panics.
The introduction of iodized salt in the 1920's dramatically<span> reduced rates of goiter</span> in the United States. This rapidly reduced the incidence of iodine deficiency. The United States and Switzerland were the first two countries to introduce the use of iodized salt to their country.
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The correct answer is A. poll tax
Poll taxes were introduced because the white voters knew that the African-American community could not pay these taxes due to poverty. Another mechanic common was a literacy test where the African-American community almost always failed because they were segregated when it came to education.
