The Bering Land Bridge was actually composed of frozen ice. They were able to cross because the water was frozen over, and didn't require sailing over open water.
L-dopa is effective against Parkinson's, but its enantiomer D-dopa is not. An enantiomers drug may not be equally effective. The enantiomer, in chemistry, is one of two stereoisomers that are mirror images of each other that are non-superposable, much as one's left and right hands are the same except for being reversed along one axis. It is also known as an optical isomer.
Dictatorship, a government in which one person makes all the rules and decisions without input from anyone else.
<span>A commission had been sent to France in 1797 to discuss the disputes that had arisen out of the U.S.'s refusal to honor the Franco-American Treaty of 1778.President Adams had criticized the French Revolution, so France began to break off relations with the U.S. Adams sent delegates to meet with the French foreign minister Talleyrand in the hopes of working things out. Talleyrand's three agents told the American delegates that they could meet with Talleyrand only in exchange for a very large bribe. Tallyrand's agents told them that Tallyrand requested a $250,000 bribe and that France can get a loan of $12 million. The Americans did not pay the bribe. </span>
