The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
Under the United States Constitution, the concept of federalism means that there is a division of powers between state and national governments,.
Under this constitutional division, the country is governed by one federal government and state governments. They have a direct relationship and sometimes they have encountered some conflicts due to the application of legislation.
The federal government is dived into three branches. The executive branch is the President of the United States. The legislative branch that is the Congres divided into two chambers. The upper chamber or Senate, and the lower chamber or House of Representatives. And finally, the judicial power that is the US Supreme Justice.
These three branches work under the system of checks and balances, which means that none of the three have more power than the others.
The states have a similar structure.
Macroeconomics rose from two different factors that are known as theories. The business cycle theory and the monetary theory, which was believed that different monetary factors couldn't and may not affect real factors, such as outputs, yet several theories has passed, different economists proposed and explained numerous theories, yet some leads to unanswerable holes, until theories and different factors were combined to create a formal consensus that every one has agreed upon and later on, several new growth theories rose for the betterment of the economy in the long-run.
