This was the Peloponnesian War. For a while, Athens was ruled by a small group of Spartans. But, for about 100 years, thousands of years ago, ancient Athens had a direct democracy, or a government in which all citizens vote on rules and laws.
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One of the first and most famous of these, the Electronic Numerical Integrator Analyzer and Computer (ENIAC), was built at the University of Pennsylvania to do ballistics calculations for the U.S. military during World War II.
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Answer:It led to the Crusades and the spread of new ideas.
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