Which phrase best completes this table

Read the excerpt from the writings of olaudah equiano, an african who was shipped to the americas on a slave ship. the closeness of the place, and the heat of the climate, added to the number in the ship, which was so crowded that each had scarcely room to turn himself, almost suffocated us. what conclusion can be drawn about slave ships from this description?

Which would have been a push factor of immigration ?

What factors allowed philip ii of macedonia to conquer the greek city-states?