Focus question: what were the causes and results
of the american revolution, and what impact did it have
on europe?

the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.

this isn't a question and if you're going to list things be kind and use commas.

continental currency was denominated in dollars from $​1⁄6 to $80, including many odd denominations in between.