Anna Jarvis campaigned for a national Mother's Day holiday in the early 20th century to honor her own mother. She lobbied politicians and held church services where she distributed white carnations, her mother's favorite flower. In 1914, Woodrow Wilson signed a bill establishing Mother's Day as a national holiday held on the second Sunday of May. Memorial Day originated after the Civil War to honor Union and Confederate soldiers who died. It was first observed unofficially by decorating graves before becoming a federal holiday in 1971, held on the last Monday of May.