The north american air mass is a large body with generally uniform temperature and humidity. the area from which air mass originates is called source region. the air mass source regions range from extensive snow covered polar areas to deserts to a tropical oceans.
They had started using tools mad of bronze they melted and shaped into there tools
I believe it's quadratic, as quadratic matches the second time while linear matches the first time you find the differences.
The value of German money decreased dramatically, leaving it essentially useless. The German government did not truly pay off their debt. It was so extreme that it was cheaper to burn money than to buy wood.
The statement said by Soviet leader Leonid Brezhnev put forth the Brezhnev Doctrine, which stated that any threat to rule in Central and Europe would require intervention by fellow states is wrong.
The Brezhnev Doctrine
Soviet leader Leonid Brezhnev proposed a foreign policy known as the Brezhnev Doctrine in 1968. It urged the Soviet Union to use military force to defend socialism in socialist or Eastern Bloc nations in Europe.
The invasion of Czechoslovakia by the Soviet Union in 1968 was followed by the Brezhnev Doctrine. It was abandoned, nevertheless, under Gorbachev's leadership. As a result, the Brezhnev Doctrine did not stipulate that any threat to Europe would need a Warsaw-Pact nation's military action.
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