Why was president clliton impeached

Bill Clinton, the 42nd President of the United States, was impeached by the House of Representatives on two charges, one of perjury and one of obstruction of justice, on December 19, 1998. Two other impeachment articles, a second perjury charge and a charge of abuse of power, failed in the House.

He made the polygraph too,but thomas edison was not falsely credited for the light buld