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The discovery of polonium doesn't affect us.
Conqured the Inca king and stole all his riches
The US is a manufacturer of most of the technology used in the world. The export of these technology adds to the GDP of the USA. The use and discovery of technology has created jobs for its citizens.
it does not affect us
Alexander Hamilton is on the US $10 bill.
1492
Alexander Hamilton was the New York delegate who signed the US Constitution. Alexander Hamilton was a founding father of the US.
It helped us by knowing what we are made up of.
he told us about egyptian culture
Robert Alexander - US Army officer - was born on 1863-10-17.
Robert Alexander - US Army officer - died on 1941-08-20.
It is useful for us