Answer:
The 90 eras for music and the 20s era for clothing.
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Answer:
B. Tigris and Euphrates river valley
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Answer:
He perfected a new source of energy.
Explanation:
James Watt, who, directing the power of his extraordinary mind to improving the steam engine, increased the wealth of his country, increased the strength of human, occupies the place among the most prominent adherents of science and the true benefactors of mankind. In January 1769, James Watt received a patent for his invention. In fact, he did not invent a steam engine, but only modernized what was invented before him. But the technical nuances introduced by him were enough to make the device efficient for using steam energy in industry. This gave an impetus to the industrial revolution and forever entered the name of James Watt in history.
Europeans carried a hidden enemy to the Indians: new diseases. Native peoples of America had no immunity to the diseases that European explorers and colonists brought with them. Diseases such as smallpox, influenza, measles, and even chicken pox proved deadly to American Indians.
