Earth and Planetary Sciences
United States
76%
United States of America
53%
War
53%
Drinking
46%
Right
46%
Water
38%
Country
38%
Territory
30%
United Nations
30%
Border
30%
State
23%
Third World
15%
Civil War
15%
Immigration
15%
U.S.S.R.
15%
Americas
15%
Form of Government
15%
Race
15%
North America
15%
Freedom
15%
Fauna
15%
Superpower
15%
Gross Domestic Product
15%
United Kingdom
7%
NATO
7%
Convention
7%
Culture
7%
History
7%
Liquid
7%
Health
7%
Canada
7%
Market
7%
Swallowing
7%
Hydration
7%
Act
7%
Institution
7%
Government
7%
Human Right
7%
Shape
7%
Justice
7%
Land
7%
Ethics
7%
Rate
7%
Training
7%
Democracy
7%
Rule
7%
Vietnam
7%
Dissolution
7%
Economics
7%
New York
7%
Slavery
7%
Area
7%
Mexico
7%
Coast
7%
Russia
7%
Good
7%
Civilization
7%
International Organisation
7%
Philosophy
7%
Income
7%
Washington
7%
Corruption
7%
Colonisation
7%
Quality
7%
Colony
7%
Bahamas
7%
Siberia
7%
Independence
7%
Legislature
7%
Cuba
7%
Continent
7%
International Monetary Fund
7%
Economy
7%
Value
7%
Developed Country
7%
Conflict
7%
Moon
7%
Taxation
7%
Social Sciences
State
100%
Water
38%
War
30%
USA
30%
Ethnic Groups
23%
North America
15%
USSR
15%
Urban Areas
15%
Beverages
15%
Americas
15%
Animals
15%
Civil and Political Rights
15%
Indians
15%
Process
15%
World War II
7%
Native American Studies
7%
International Organizations
7%
Canada
7%
Quality of Life
7%
Developed Countries
7%
European Colonization
7%
Universal Health Care
7%
Continents
7%
Moon
7%
Independence
7%
Russia
7%
World War I
7%
Content
7%
Korean
7%
Military Conflict
7%
Slavery
7%
Colonial Countries
7%
International Monetary Fund
7%
Human Rights
7%
Education
7%
Cuba
7%
Social Convention
7%
Organizations
7%
Bahamas
7%
Nineteenth Century
7%
Income and Wealth
7%
Eighteenth Century
7%
Representative Democracy
7%
Military Expenditure
7%
Space
7%
Inequality
7%
UK
7%
Government
7%
Coastal Zones
7%
National Cultures
7%
Health
7%
Measure
7%
Economics
7%
Justice
7%
Mexico
7%
Philosophy
7%
Taxation
7%
Markets
7%
Economic Systems
7%
Corruption
7%
Deontology
7%
Food
7%
Moral Concepts
7%
Morality
7%
Social Conflicts
7%
Law and Ethics
7%
Administrative Structure
7%
Legislation
7%
History
7%
Problem
7%
Parliament
7%
Wealth
7%
Attempt
7%
Republic
7%
District
7%
INIS
usa
92%
water
38%
populations
23%
people
23%
humans
23%
legal aspects
23%
north america
15%
united nations
15%
capital
15%
animals
15%
power
15%
soviet union
15%
ethics
7%
economy
7%
moon
7%
esophagus
7%
liquids
7%
hydration
7%
economics
7%
mouth
7%
values
7%
mexico
7%
education
7%
quality of life
7%
siberia
7%
washington dc
7%
viet nam
7%
international organizations
7%
east coast
7%
bahama islands
7%
dissolution
7%
organization of american states
7%
great britain
7%
new york city
7%
cuba
7%
nato
7%
spending
7%
world bank
7%
space
7%
india
7%
shape
7%
food
7%
canada
7%
legislature
7%
united states of america
7%
conventions
7%
income
7%
security
7%
colonies
7%
levels
7%
exchange rate
7%
market
7%
indian reservations
7%
united kingdom
7%
cities
7%
russian federation
7%
intake
7%
developed countries
7%