Analyze the extent to which the Spanish American War was a turning point in American foreign policyI need specific facts on how it was a turning...

Before the Spanish-American War, America's foreign policy
was aimed mostly at expanding its own territory and protecting it fro foreign threats. 
The issues America had with other countries all revolved around things like that.  There
was the Louisiana Purchase.  There was the Mexican-American War.  There was the "54-40
or Fight" crisis involving England and the Oregon
Territory.

Beginning with the Spanish-American War, the US
turned towards expanding its power and having more of an impact on the international
scene.  The US then did things like taking and running the Philippines.  It pushed for
the "Open Door" in China.  It mediated between Japan and Russia in the Russo-Japanese
War and it tried to keep Japan from expanding too much in the days before
WWII.

In this way, the Spanish American War represented a
turning point after which the US was more aggressive and more internationally-minded
than it had previously been.