Galileo Galilei developed a stronger telescope and was able to prove that Ptolemy's theories about the moon were wrong.
The main reason why America's ties with the Allies were stronger than the ties with the Central Powers was because of economic reasons. The Allies purchased large amounts of weapons and war goods from the United States. Germany was developing its own weapons thus it didn't enlist for American supplies.
The Enforcement Act of 1870 basically made illegal the voting discrimination that existed on the basis of race. It made illegal the opposition of some government officials to integrate former slaves, mainly African-American in the social and political life.
I would do either antigone or oedipus because those two are widely known and will be easy to fond information on.
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Hope this helps
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Zane
radiation I believe that is it