Mother's Day can be traced back to ancient civilizations such as the Greeks and Romans, who held festivals honoring mother goddesses.
The modern Mother's Day in the United Kingdom has its roots in the Christian holiday known as "Mothering Sunday".
The official flower of Mother's Day is the carnation. Anna Jarvis, the founder of Mother's Day in the United States, chose this flower because it was her mother's favorite.
In 1914, President Woodrow Wilson signed a proclamation declaring Mother's Day a national holiday in the United States.
While many countries celebrate Mother's Day on the second Sunday in May, others have different dates.
Mother's Day is the third-largest card-sending holiday in the United States, with millions of cards exchanged each year.
The first official Mother's Day service took place on May 10, 1908, at St. Andrew's Methodist Church in Grafton, West Virginia, where Anna Jarvis' mother had taught Sunday school.
In 1934, the United States Postal Service issued a special Mother's Day stamp for the first time.
Some communities organize charity events on Mother's Day, raising funds for organizations that support mothers and children in need.
The ancient Egyptians had a festival called "The Festival of Isis," which celebrated the goddess Isis as the ideal mother. It involved feasting, music, and dancing.