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Mark Pennell sits at the helm of his time machine.Mark's Almanac is a 90-second time travel that highlights the world's history from the very serious to the sometimes sublime.

Mark's Almanac for September 9, 2021

An American flag.

It was on this date in 1753 that the first steam engine arrived in the American colonies. Made by British engineer Jonathan Hornblower, the engine was used in a copper mine in Passaic, New Jersey. And it was on this date in 1776 that the Continental Congress formally declared that the new nation would be called The United States.