As the first peaceful transition of political power between opposing parties in U.S. history, however, the election of 1800 had far-reaching significance. Jefferson appreciated the momentous change and his inaugural address called for reconciliation by declaring that, "We are all Republicans, we are all Federalists."
For more info http://www.ushistory.org/us/20a.asp
I believe that the 15th Amendment granted suffrage (the right to vote) to African American men.
The human activity most widely viewed as changing the planet is the burning of fossil fuels. ... to melt, threatening water supplies for hundreds of millions of people. ... and phosphorus to the biosphere than would occur naturally. ... compounds that can remain active in the environment for thousands of years .
hope this helps u
