1991 Event Soviet parliament approves law allowing citizens to travel abroad 1990 Event "Some Americans Abroad" closes at Vivian Beaumont New York City after 62 performances 1990 Event "Some Americans Abroad" opens at Vivian Beaumont New York City for 62 performances 1923 Event University of Delaware invents "junior year abroad" (at Sorbonne) 1855 Event U.S. citizenship laws amended all children of U.S. parents born abroad granted U.S. citizenship