Related articles:
Eastern Europe
European integration
British Empire
Biodiversity
Third World
Sport
Key terms:
world war
united states
vaccine
soviet union
world war ii
abad
communism
cold war
bombed
end of the century
inventions
advancements
relativity
trench
hepatitis
civil war
unprecedented
epidemic
drastically
million people
united kingdom
capitalism
global warming
eastern europe
british empire
united nations
xix century
middle east
fossil fuel
antibiotics
culminating
nuclear weapons
human rights
world population
geopolitical
popular music
european union
overpopulation
other diseases
two world wars
ottoman empire
western europe
life expectancy
after world war
powerful nations
great depression
natural resources
half of the century
developing countries
hiroshima and nagasaki
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