18 and $3.50 because the equilibrium is when they cross
The successful launch of Sputnik 1 was the first instance of a successful launch of an artificial Earth satellite launched into outer space. This was done successfully by the Soviet Union on October 4, 1957. This launch spawned the Space Race between the United States and the Soviet Union to gain dominance over outer space technology to prevent either country from possessing a military advantage.
Overall the cause of the World War was the assassination of Archduke Franz Ferdinand because Nationalism was a great cause for World War one because of countries being greedy and not negotiating.
In just twelve years, Alexander the Great conquered vast territories and dominated lands from west of the Nile to east of the Indus. He brought the Persian Empire, Egypt and much of the Middle East under his control.
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