Denomination overview. Authorized under an act by the United States Congress, the first two-dollar bill was issued in March 1862 and the denomination was continuously used until 1966; by that time, the United States Note was the only remaining class of U.S. currency to which the two-dollar bill was assigned.
United States Notes switched to small size in 1928 and were introduced in denominations of only $1, $2 and $5. In 1934, when Federal Reserve Notes stopped being redeemable in gold, the only difference between them and Legal Tender Notes was that the first were liabilities of the Federal Reserve while the latter were direct liabilities of the United States Treasury Department.
The United States one-hundred-dollar bill ($100) is a denomination of United States currency. The first United States Note with this value was issued in 1862 and the Federal Reserve Note version was launched in 1914, alongside other denominations. 
Thus the United States moved to a gold standard, making both gold and silver the legal-tender coinage of the United States, and guaranteed the dollar as convertible to 25.8 grains (1.672 grams, 0.05375 troy ounces) of gold, or a little over $18.60 per ounce.
Gambling in the United States is legally restricted. In 2008, gambling activities generated gross revenues (the difference between the total amounts wagered minus the funds or "winnings" returned to the players) of $92.27 billion in the United States.
Coins of the United States dollar (aside from those of the earlier Continental currency) were first minted in 1792. New coins have been produced annually and they make up a valuable aspect of the United States currency system. Today, circulating coins exist in denominations of 1¢ (i.e. 1 cent or $0.01), 5¢, 10¢, 25¢, 50¢, and $1.00.
Beginning with the Theodore Roosevelt administration, the United States became a major player in international trade, especially with its neighboring territories in the Caribbean and Latin America. Today, the United States has become a leader of the free trade movement, standing behind groups such as the General Agreement on Tariffs and Trade (later the World Trade Organization ).