<span>The
breakdown of old alliances among European powers and an arms race led
by Germany helped set the stage for the conflict, which was sparked by
the assassination of Archduke Ferdinand of Austria on June 28, 1914.</span>
The last country in the world to challenge the United States control of Oregon was Great Britain. Oregon was won in the War of 1812.
Answer:
Today, people have divided into groups due to diversity.
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