400 / 10 = 40
There are 40 10s in $400.
A cow kicked over a lantern in the O'Leary barn apparently.
It's purpose was to counter Soviet geopolitical expansion.
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Explanation:how to get a book: from online buddy
<span>The answer is
population overcrowding in Europe. The
first reason is Europe was not overpopulated at that time. In the 1800s, there were two things that kept
the population down. These were warfare
and epidemics. Therefore, population
overcrowding was not a major cause of European imperialism in that century.</span>