How do anthropologists explain worldwide variation in human blood types?

How does the pyramid of giza include art, science, math, or a need for infrastructure?

Which statement best describes standard oil in the late 1800s? standard oil controlled only a small number of the nation’s oil refineries. standard oil was a single business that operated in a small region. standard oil controlled only the means and methods of oil production. standard oil owned ninety percent of all oil refineries in the united states.

What event involving the maine motivated the united states to go to war with spain? it exploded in cuba. it was hijacked in the philippines. it exploded in panama. it was hijacked in puerto rico.