His name was Albert Einstein that’s the answer
They attempted to create perfect communities or utopias
Answer: The Walls Protecting Athens. The walls protecting Athens during the Peloponnesian War. Initially Athens' strategy, as guided by Pericles, was to avoid open battle with the more numerous, and better trained Spartan hoplites, and to instead rely on Athens' superior fleet.
Explanation: Yes.
The second option is the correct answer.
Back in day, there was child labor, so if parents needed more money, they would force there children to work. Thus, they didn't have time for school.
He contributed to a writing called On the Heavens
