They were hit by an asteroid about 65 million years ago
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Clean-up is proceeding very slowly and thousands of hectares of cropland is still off-limits to farmers. Government officials have stated that some land may need to be quarantined for 30 years or longer.
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The Berlin Blockade was an attempt in 1948 by the Soviet Union to limit the ability of the United States, Great Britain and France to travel to their sectors of Berlin, which lay within Russian-occupied East Germany.
In June 1948, the simmering tensions between the Soviet Union and its former allies in World War II, exploded into a full-blown crisis in the city of Berlin. Alarmed by the new U.S. policy of giving economic aid to Germany and other struggling European nations, as well as efforts by the Western Allies to introduce a single currency to the zones they occupied in Germany and Berlin, the Soviets blocked all rail, road and canal access to the western zones of Berlin. Suddenly, some 2.5 million civilians had no access to food, medicine, fuel, electricity and other basic goods.
Fought primarily over white expansion into Indian territory, the battle lasted approximately one day with the Untied States securing victory. The conflit at Tippecanoe was the primary catalyst for the war of 1812 between Britain and the Untied Stares