When was the first official Mother's Day celebrated in the USA?
Correct answer: 1908

Newt
Player Elf Counsel, understand the feeling that the US has come to dominate popular culture, but come on be fair...the question specifically asks about the USA, no claims about "inventing" anything. Btw we in Aus follow the US date.

Player #24358685
While I got this correct, this is erroneous. You can't ask when was the first official Mother's Day in the USA. (1914, designated by Woodrow Wilson as the second Sunday in May) and then give the answer as the "official," as in "not official," first day.

Dwyer
not official until 1914

Player #2546993
Player Elf Counsel, read it again.