There were huge amounts of centrifugal force in america during the civil war.
Centripetal Force
A force that brings people and nations together
The UN is a group of world nations using centripetal force to come together and solve world problems.
Common Market
A single national market between nations without trade barriers
The common market between the US and France shown by how both use the same currency.
Supranational Cooperation
A type of international cooperation where countries give some control of their in order to work together.
The supranational cooperation of religion connects many countries together.
Chapter 15 Population Dilemmas in Europe
Demography
The study of the human population, on how they like birth, death,migration, and ageing rates
The students in this lab study the demography of Africa.
Dependency Ratio
The number of old and young age dependents who don't compared to the number of those who do work
The dependency ratio differs from country to country, because different countries have different cultures and governments that allow different working ages
Life Expectancy
The average age a person in a population is estimated to live
The Life Expectancy in some countries is very low due to lack of medicine and/or food.
Replacement Rate
The fertility rate needed for a population to replace itself when it loses someone
The replacement rate of countries have change over due to a change of fertility rate.
Total Fertility Rate
The average number of babies a women will have in her lifetime in a given population
The total fertility rate in a population depends on the number of babies a women will have in her lifetime.
Ch.18 New Nation-States from the Old Soviet Empire: Will They Succeed?
Ethnic Group
A group of unique people country who share a cultural identity
America is a mix of different ethnic group and cultures.
Nation
A large group of people who share a common ideal or culture
A Nation is a place where ones who share the same ideal can go to fight or live with those like them.
Nationlism
The feeling of pride and loyalty towards ones country or cultural
Nationalism is a way life many Americans celebrate.
Nation-state
An independent state, or nation that shares a cultural identity.
Africa is mainly made up of nation-states.
State
A political unit that controls that area
America is all states united under one flag and one government.
Chapter 20 Life in the Sahara & Sahel: Adapting to a Desert Region
Desertification
The Process in which a climate becomes dryer and dryer until it turns the land into a desert.
The climates in some areas have become so dry that because of desertification so areas have become desert.
Drought
A long period of dryness and lack of water and rain fall
The drought we are having is causing a water shortage at the reservoir.
Marginal Land
Land that is not suited for farming or large crops
The drought has ruined this land and now it's only marginal land that can not be used.
Pastoral Nomads
A group of herders who move their animals from pasture to pasture.
A group of pastoral nomads brings their animals here often to graze.