18. In the American economic system, a. government plays a very limited , hands -off role . b. private enterprise and governmental participation coexist. c. there is no regulation of the free market. d. most businesses are owned by the government .

b. private enterprise and governmental participation coexist.

Explanation:

The American economic system is a mixed economic system which means that there are elements of both private enterprise and government participation.

There was a time when the U.S government played a limited role in the economy but as time went by and multiple failures were recorded in this system, the government stepped in to control the economy somewhat which led to both the private and public sectors having to coexist.

“a committee reviews the bill and marks it up to make it more viable and to reflect interests 

because it took place after the war of 1812 had come to an end.