| A | B |
|---|
| revolution | sweeping change in the way people thought |
| The Enlightenment | time period from 1700's and the way science helped explain the world and how people thought and reasoned |
| Holocaust | the mass killing of 6 million European Jews by Germany's Nazi rulers |
| communism | a system in which the government controls the ways of producing goods |
| ethnic groups | a group of people with shared ancestry, language, and customs |
| welfare states | where the government is the main provider of support for the sick, the needy, and the retired |
| fertility rate | the average number of children born to each woman |
| urbanization | concentration of people in towns and cities |
| religion: secular | nonreligious |
