% of GDP spending on education
Reddit user: s251572
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World
Countries richer & poorer than the world average (GDP per capita)
Reddit user: sandyisback
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Submarine Cable map
The first internet connections appeared in 1969, while the international connection across the Atlantic Ocean appeared in 1973. Today, there are over 420 submarine cables in service, extending over 1.1 million kilometers (700 thousand miles) around the globe.
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Constitution Age of Current Sovereign states
Reddit user: filipomar
Read MoreCountries by height of tallest building
Reddit user: trinitronbx
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Europe through the 19th century
Reddit user: FirstWhistle
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Percent of electricity produced from renewable sources worldwide
Reddit user: Ponicrat
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