The Hebrews were monotheists who believed in only one god, while the Sumerians and Egyptians believed in many gods (they were polytheists).
Answer:
1) Former <em>President Benjamin Harrison</em>. After the murder of 11 italian immigrants, he declared it as an one-time national celebration, in order to ease diplomatic tensions with Italy.
2) Indigenous people Day. Since 2015, several Council members from the <em>District of Columbia</em> have tried to change the name, which had happened this year. Now, the <em>District of Columbia</em> celebrates <em>"Indigenous People Day"</em>.
3, 4) 1451, in Genova.
5) 29 days. The crew spotted a flock of birds, which were a sign of land.
6) On his first voyage, between 86 to 89.
7) 1792.
8) New York City with over 35,000 marchers and one million viewers.
9) Italian.
10) Puerto Rico Friendship Day.
The Chinese created all of those things because they started to advance and had to use new technology.
1--164 ce had a small pox epidemic which contributed to the decline of the Roman Empire
2--1347 ce was the height of the Black Plague contributing to population declines in Europe
3--1492 ce was the onset of small pox and other diseases entering the America decimating the population of the native populations.
The similarity between all three time periods is a period of disease which led to great numbers of population decline.