They opened fire on boycoters
One defining characteristic of the Era of Good Feelings was the industry. People began to work in factories as well as produce steamboats, engines, etc.
The answer to this question is D. Have relatively short histories.
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Answer:
Observation
Explanation:
According to the quote, "It is the duty of an astronomer to compose the history of the celestial motions through careful and skillful observation"
An astronomer must first observe before he can do any other thing.
The media is something that has become more widespread and is easily accessible. People can post their opinions in get it to a large crowd in a short amount of time.
