1919
Correct! Well, sort of. The Michigan Union first opened its doors to men in 1919--women weren't allowed in freely until 1956.
1928
Oops! The Michigan League was constructed starting in 1928, when its cornerstone was laid on the plot. Try again.
1956
Oops! The Michigan Union opened to women in 1956, but it wasn't the first time its doors were opened. Try again.