What did Alexander Mackenzie discover?

Answer

Alexander is credited for the first person to discover Canada. He crossed Canada to get to the Pacific Ocean in 1793. He was a Scottish explorer and was soon after knighted.
Q&A Related to "What did Alexander Mackenzie discover?"
He was the first person to discover the tar sands in Alberta as well as put it in commercial development in the early 1900's.
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He was a bad boy. He conquered most of the known world during his time. Much of it he conquered without a fight. But he did over run a lot forces.
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Hernan Cortes discovered nothing new, but is famous for conquering an Aztec empire in Mexico in 16th century. He did found Mexico City and was the New Spain.
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Watson and Crick are best known for discovering the shape of the DNA molecule. They first came up with the idea of the double helix. There were others that came up with this idea
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