"<span>They all focused on extending citizenship and protecting civil rights of minority groups" would be the best option from the list, since Republicans in Congress wanted to ensure that the newly-freed slaves would not be stopped from advancing in society. </span>
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.
loco español.......................................
Answer:
The thick jungle and vegetation hinder american forces from using their material advantage of tanks and other sorts of ground combat vechiles. That's why the US used agent orange to try and clear vegetation and jungle so the vietcong couldn't use it as places to hide and retreat to when ambushing American troops
