December 7, 1941<span>Although the war began with Nazi Germany's attack on Poland in September 1939, the United States did not enter the war until after the Japanese bombed the American fleet in Pearl Harbor, Hawaii, on December 7, 1941.</span>
<span>The petro-yuan is an instrument being issued by the Chinese government, allowing for the purchase of oil futures contracts denominated in Chinese yuan and backed in gold. The fact that China is the world's largest petroleum importer and is guaranteeing this currency to be exchangeable for gold means that the currency is likely to be considered seriously by many investors as a stable reserve currency. This is troubling for the U.S. because for decades the dollar has been seen as the world's primary reserve currency - but this new option gives an alternative to that status quo.</span>
A. because if this wasn't true we wouldnt have had a war based off our freedom.The revolutionary war
The best reason the United States might aid another country is to protect US interests abroad, especially when a democratic country is at risk of falling to a non-democratic one, since it is in the US's best interest for foreign nations to be democratic rather than authoritarian. <span />
