I think it is the Microscope. Robert Hooke was a scientist who came up with the law of elasticity, the Hooke's law as well his pioneering work using the microscope to document observations of a variety of samples in his book. Hook published a book Micrographia, an accurate and detailed record of his observations through his microscope.
Answer:
Germany had a hard time raising money to make its payments. - Germany was obligated to raise billions of dollars to pay the Allies.
Explanation:
African Americans protested in the streets against discrimination.
C. People in northern states could simply not afford to own slaves. This was because they were poorer than the southern states.
I would think the author is speaking about an political event in which people vote.
