Answer:
The answer is A
Explanation:
New vaccines protect people from diseases.
Answer: Slater established his first mill in 1790 on the Blackstone River in Rhode Island. It was one of the first factories in the United States. Three years later, in Pawtucket, he built Slater Mill, the first American factory to successfully produce cotton yarn with water-powered machines.
The smaller city-states resented how Athens spent the money in the Delian league treasury because Athens spent the money to beautify the state and build a navy. They believed that the things they spent money on, like fine buildings, were unnecessary.
