OnThisDay: March 12th
1350 - Orvieto city said it would behead and burn Jewish-Christian couples
1664 - First naturalization act in American colonies
1789 - US Post Office was established
1912 - Girl Guides (now the Girl Scouts) was founded in Savannah, GA by Juliette Gordon Low
1938 - Nazi Germany invaded Austria (Anschluss)
1945 - New York was first state to prohibit discrimination by race & creed in employment
1956 - Dow Jones closed above 500 for 1st time (500.24)