2. Why did Reagan and conservative Republicans believe that tax cuts would help all Americans?

His idea, which was shared by many conservatives, was called supply-side economics, or trickle-down theory. They argued that by cutting taxes for the elite, the corporations would be able to expand their company and thus bring in new jobs, helping everybody in the process. As a result, they believed that the economic benefits will seep, or "trickle-down" to the poor.

If you are taking APUSH, you should also note that liberals wanted Keynesian economics, where they believed that the key to economic success was for the government to spend a lot of money to keep the economy circulating.

answer: the third option is your answer

explanation: