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.
Iron, ivory, gold, and salt were common goods
B. raw materials . It seems that as the europeans became more industrialized , they were able to discover new raw materials in the colonies in which they settled .
Dwight eisenhower is the answer