Answer:
Small pox. common cold, and the flu. Give me brainliest please :D
Explanation:
They were diseases they hadnt seen before and they hadnt had an imune system strong enough
The correct answer is the United States constitution. It outlines the three branches, legislative, judicial, and executive, and establishes them as a system of checks and balances. Each one is more powerful than another and weaker than the third one, which makes it a triangle where everyone is balanced.
The automobile encouraged tourism and created new businesses in the 1920s