The United States of America (commonly abbreviated to the United States, the U.S., the USA, America, and the States) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its forty-eight contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south. The state of Alaska is in the northwest of the continent, with Canada to the east and Russia to the west, across the Bering Strait. The state of Hawaii is an archipelago in the mid-Pacific. The country also possesses several territories in the Pacific and Caribbean.

At 3.79 million square miles (9.83 million km²) and with over 312 million people, the United States is the third or fourth largest country by total area, and the third largest by both land area and population. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. The U.S. economy is the world's largest national economy, with an estimated 2011 GDP of $15.1 trillion (22% of nominal global GDP and over 19% of global GDP at purchasing-power parity). Per capita income is the world's sixth-highest.

S.A. designates a particular type of corporation in various countries, mostly those employing civil law. Depending on language, the abbreviation stands for various phrases meaning anonymous society, anonymous company, anonymous partnership, or share company. The concept is roughly equivalent to that of the public limited company in the UK and some other countries. It can be differentiated from partnerships and private limited companies.

S.A. can be an abbreviation of:

It is equivalent in both literal meaning and practical function to:

It is equivalent in practical function to:

Derrick Martell Rose (born October 4, 1988) is an American professional basketball player for the Chicago Bulls of the National Basketball Association (NBA).

Born in Chicago, Rose learned the game of basketball from his three older brothers. In high school, he won two state championships and was rated by scouts as the top point guard prospect in the country after graduation.^{[citation needed]} He played for the University of Memphis Tigers and reached the NCAA national championship game in 2008. Shortly after, Rose declared for the 2008 NBA Draft and was selected first overall by the Chicago Bulls. In his first year of professional basketball, Rose was voted the Rookie of the Year and was selected to the All-Rookie Team. In his second season, Rose was selected as an NBA All-Star for the 2010 NBA All-Star Game; he was also named a starter for the U.S. team at the 2010 FIBA World Championships. Since being drafted, Rose has led the Bulls to the NBA Playoffs every year. In 2011, he received the NBA Most Valuable Player Award, becoming the youngest player ever to win this award. He joined Michael Jordan as the only Chicago Bulls players to win the honor.