Andrew Jackson was never impeached because the House of Representatives never passed a bill of impeachment against him. Nor, as far as I know, did they ever want to. (EDIT: See below.)
You may be confusing him with President Andrew Johnson, who was the first President to be impeached. (There have been exactly two, him and Bill Clinton. Richard Nixon might have been, but he resigned before the House could act.)
Johnson was in conflict with not only Congress but with members of his own Cabinet. In 1867, Congress passed the Tenure of Office Act, which restricted the President from firing his own Cabinet members and other appointed officials without the advice and consent of the Senate. Johnson persisted in trying to dismiss Edwin Stanton, his Secretary of War, and the House passed a bill of impeachment against him as a result. The Senate, however, failed to convict him and remove him from office, by one vote. (To date, no President has been removed from office as a result of impeachment.)
EDIT: Andrew Jackson was accused of certain gross Constitutional violations during his time in office, such as destroying the Second Bank of the United States, forceful relocation of Native Americans (as part of which he defied the Supreme Court), and declaring that states do not have the right to nullify Federal laws. While people may have in fact wanted him impeached over these actions, the fact remains that the House of Representatives never passed a bill of impeachment against him.
On February 24, 1868 three days after Johnson's<span> dismissal of Stanton, the House of Representatives voted 126 to 47 in favor of a resolution to </span>impeach<span> the President for high crimes and misdemeanors. ... One week later, the House adopted eleven articles of </span>impeachment<span> against the President.</span>
Roads were nothing more than dirt paths that were dry and dusty during the summer and muddy during the winter -historylink101.com (Travel by Land in Ancient Greece)
The first slaves were introduced into the English-American colonies by a Dutch trader, who, in 1619, sold twenty of them to the settlers at Jamestown, Va.
