She was Theodore Roosevelt's niece. At her marriage ceremony to FDR, the previous president walked his niece down the aisle. On that date, members of Nixon's Committee to Re-Elect the President broke into the Democratic National Committee's headquarters in the Watergate complicated. The father of the Constitution is which president? The phrase Manifest Destiny was coined in 1845. It describes the nineteenth-century belief that God chose the U.S. What was the belief that the United States should...