The correct statement for the given statements are:
1. The most powerful political parties in the United States of America are the Republicans and the Democratic parties. These two parties primarily dominate the political field in the US. These parties believe in increased military spending, deregulation, restrictions on labor, and free-market capitalism.
2. The influential or the third parties of the US are Green parties, Natural Law, and Libertarian. Third parties functions to bring more people to polls, draw attention to other party candidates, and help the parties to win at the state office.
3. Ralph Nader is an American activist, who had a great effect on the 2000 presidential election. He received over 2.74% of the total popular vote during presidential elections.
Therefore, the correct answers are Republicans and Democrats, Green parties and natural law, and Ralph Nader.
To know more about US political system, refer to the following link:
https://brainly.com/question/19995087
