The Greeks discovered that diseases occur naturally. They discovered that you became sick because your body was reacting to the disease. The Greeks believed that if you stayed clean and washed your hands you could prevent diseases. The Greeks built temples for their gods, like The Parthenon. They built beautiful coloms to hold their building up. The Greeks greatest contribution is their way of government. Their Democracy.
The US has a market economy.
Answer:
The passage of the Civil Rights Act of 1964 was a significant event in converting the Deep South to the Republican Party; in that year most Senatorial Republicans supported the Act (most of the opposition came from Southern Democrats)