On April 18, 1775, Dr. Joseph Warren saw the British regulars mobilizing in Boston. By the end of next day, however, no man who had stood on the field of battle had any doubt that the Colonies were at war with Britain.
In the aftermath of April 19, 1775, would be immortalized as a mythic American moment, in poems, engravings, songs, and in celebrated phrases like Ralph Waldo Emerson's "the shot heard round the world."
Most of the historical facts seem relatively easy to corroborate, but how the events were interpreted decisively altered the development of the nation.