Arrange the events in chronological order. tiles loss of millions of lives in a flu pandemic dramatic growth in population in developing countries world population reaches the one-billion mark beginning of the agricultural revolution urbanization and industrial revolution sequence ↓ ↓ ↓ ↓

Agricultural Revolution (begins in 18th c.)--Industrial Revolution (begins in late 18th c)--Urbanization--World population hits 1 billion (1804)--Flu Pandemic (1918)

Not sure if "dramatic population growth in developing countries" is a separate choice or part of the population hitting 1 billion. Population growth occurred through this whole time period but particularly after the Agricultural Revolution as it produced better food more cheaply. This boom would allow for more people to be available to work in industry as it develops. 

The answer is b.african american abolitionists emphasized legal and social equality

The correct answer is c