Final answer:
The United States is a representative democracy where citizens elect representatives to make policy decisions on their behalf. The United States utilizes primaries to select political candidates and holds elections for the chief executive every four years.
Step-by-step explanation:
In the United States, the government is a constitution-based federal republic, which means it is a representative democracy. Citizens elect representatives to make policy decisions on their behalf. Elections are held for representatives at the local, state, and national levels, as well as for the office of the president.
The United States uses primaries to select political candidates. Each party holds a primary election to determine which candidate will represent the party in the general election.
In terms of elections for the chief executive, the United States holds elections for the president every four years. The president serves a four-year term and can be re-elected for a maximum of two terms.