John Pumphrey was still a boy when he enlisted in the Continental Army in 1777. After archaeologists discovered his remains, a genetic genealogy analysis identified 20,000 DNA matches for living relatives

Meteorological tsunamis likely sank the 13th-century trading vessels, whose cargo included objects from both Christian kingdoms and Moorish communities on the Iberian Peninsula

Soldiers of Irish heritage accounted for up to 50 percent of the Continental Army's ranks. Driven from their homeland by British oppression, Irish-born rebels also served as spies, politicians and more

Progressive reformer Frances Kellor spearheaded efforts to celebrate Americanization Day, arguing that immigrants should fully embrace U.S. culture to better adapt to life in their new home