Most likely because in poor, rural areas, public schools are scarce/ not easily available, and so sending a girl to school is not as prioritized as sending a boy to school, since a boy can start working and be a "breadwinner" for the family sooner than a girl.
I’m pretty sure it’s d cause I’ve never heard anything about Pearl Harbor being connected to the Cold War
It was called isolationism :D
The cotton gin Was made in 1793 in order to remove seeds from Cotton fiber so the correct answer would be (B)