Major Currencies in the Forex Market

For those who are new to forex trading, go to Major Currencies for a great explanation of the four major curriences in the forex market.

Major Currencies:

"The United States dollar is the world's main currency. All currencies are
generally quoted in U.S. dollar terms. Under conditions of international economic
and political unrest, the U.S. dollar is the main safe-haven currency which was
proven particularly well during the Southeast Asian crisis of 1997-1998.
The U.S. dollar became the leading currency toward the end of the
Second World War and was at the center of the Bretton Woods Accord, as the
other currencies were virtually pegged against it. The introduction of the euro in
1999 reduced the dollar's importance only marginally.
The major currencies traded against the U.S. dollar are the euro,
Japanese yen, British pound, and Swiss franc."