Which of the following is the key difference between the u. s. system of government and the communist system of government?

Historically, the majority of governments were authoritarian. Ruled by a monarch, despot or dictation, these governments had virtually unlimited power. However, popular revolt was almost always a possibility, so leaders had to ensure that they did not push their citizens too far. In addition, aristocratic classes often held considerably sway, and upsetting the wealthy frequently led to coups.

answer; the president uses mass media to gain support for policies;