Final answer:
Mary Church Terrell was the first female national president of APO. She was also the first president of the National Association of Colored Women's Clubs.
Step-by-step explanation:
The first female national president of APO was Mary Church Terrell. However, it is important to note that APO refers to Alpha Phi Omega, which is a co-ed service fraternity rather than a national organization with a president. Mary Church Terrell was actually the first president of the National Association of Colored Women's Clubs (NACWC) in 1896. She was an activist, educator, writer, and leader who fought for desegregation and women's rights.