Answer: b. Rome and Greece
Explanation: The United States government is modeled on the governments of Rome and Greece. Both ancient civilizations had a significant influence on the development of the United States government.
1. Rome: The United States government adopted several elements from ancient Roman government. For example, the concept of a republic, where citizens elect representatives to make decisions on their behalf, was inspired by the Roman Republic. The idea of checks and balances, which ensures that no single branch of government becomes too powerful, also originated in ancient Rome. Additionally, the use of a written constitution and the practice of dividing government powers into separate branches can be traced back to Roman governance.
2. Greece: The United States government was also influenced by the democratic system of ancient Greece. The idea of direct democracy, where citizens participate directly in decision-making, was first implemented in the city-state of Athens. While the United States does not have a direct democracy, the principles of citizen participation, rule of law, and equal rights for citizens can be seen in the American democratic system.