Answer:
A. Countries find it difficult to export their goods to foreign markets.
Explanation:
Tariffs are taxes on foreign goods. They are a form of economic protectionism, and their main purpose is to protect domestic producers from foreign competition.
A the start of the Great Depression, many countries raised tariffs, making it difficult for other countries to export their goods, simply because now they were more expensive due to the tariffs, and as a result, less people could afford them (the demand for them fell).
According to Washington, to stop a rebellion, you need a strong armed force to crush it. During his time, the US is just untied. Many Americans doesn't trust the government. To show power and authority, Washington believes that when a rebellion is formed, you need to force it to stop. The federal government is the power to check these rebellions. If the government don't, who would protect the citizens and their human rights?
D) the lines are parallel and measure the distance North and south of the equator.