Four empires collapsed: the Russian Empire in 1917, the German and the Austro-Hungarian in 1918
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ammunitiion was a big affect of world wars i learned about it in 9th grade/ i am in 9th grade
Everything from California to Alaska and between the Rocky Mountains and the Pacific Ocean was a British-held territory called Oregon. The trail pointed the way for the United States to expand westward to achieve what politicians of the day called its “Manifest Destiny” to reach “from sea to shining sea.”
