Explanation: Direct democracy dating back to ancient Greece is a model where all citizens participate in political decision-making. Such democracy has served as a model for representative democracies, in which citizens elect their representatives in free democratic elections. Representatives participate in decision-making on behalf of citizens. This model is more prevalent because many citizens are not always able to participate in decision-making, nor are everyone competent for such a thing.
In a direct democracy all citizens meet together and make decisions via a vote. And in a representative democracy, citizens elect leaders who make decisions on their behalf.
The main reason why the United States involved itself in a civil dispute on the Korean peninsula in the 1950s was "<span>to exercise the policy of containment," since they were attempting to stop the spread of communism. </span>