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in the 1800s, America opened Japan to trade and called for an Open Door Policy, giving all nations equal trade access to China.
(https://www.sutori.com/story/china-the-open-door-policy) -
In 1823, President Monroe issued Monroe Doctrine, warning European powers to stay out of the affairs of North and South America.
(https://angrystaffofficer.com/2015/12/02/has-the-u-s-begun-a-new-monroe-doctrine-in-the-middle-east/) -
By 1900 America had expanded across the continent and overseas and sought to expand its political influence as well.
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In the 1930s, President Franklin Roosevelt pursued the Good Neighbor Policy, reducing U.S. military and political involvement.
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The United States has also pursued a policy of deterrence, building a military strong enough to deter any direct attack on America.
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Chairman Mao Zedong meets with U.S. President Richard Nixon, 1972
(http://www.chinadaily.com.cn/cndy/2012-01/17/content_14457826.htm) -
The Soviet invasion of Afghanistan in 1979 led to U.S. support of the anti-communist rebels and a renewed containment policy.
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After the 2001 attacks, U.S. forces toppled the Taliban regime in Afghanistan
(https://abcnews.go.com/International/us-afghanistan/story?id=52763044) -
The United States and its allies began the second Gulf War in 2003. The goal was to end the threat posed by Saddam Hussein's dictatorial regime and its suspected weapons programs.
(https://www.slideshare.net/MrG/iraq-war-442856) -
President Donald Trump signed documents to increase the imports tax.
