Albert Einstein was born in Wurttemberg, Germany on March 14, 1879.  But his moved a lot, they went to Munich six weeks after he was born then moved to Italy then moved to Switzerland which here he lived for a while and got his citizenship.  Einstein did most of his remarkable during his spare time.  In 1914, he became a German citizen working as a professor at the university of Berlin.  He remained there until 1933, when he moved to the United States and became a professor of theoretical physics at Princeton.  He became an American citizen in 1940 and retired in 1945.