How did the developments of the early 1990s present both difficulties and opportunities for the United States?

The world entered the 1990s with a bang.  There were two major developments behind this, the victory of the United States and coalition forces in the 1990 Persian Gulf War, and the dissolution of the Soviet Union in 1991.  Both of these foreign policy successes were a shot in the arm for Bush’s Administration, as his approval ratings skyrocketed to 90% President George H.W. Bush had strong accomplishments with regards to foreign policy, the sluggish economy led to his defeat in 1992, when the third-party candidate Ross Perot entered the fray, taking votes away from the incumbent, allowing Governor Bill Clinton of Arkansas to step up to podium.   technological developments were a crucial factor in the economic expansion of the 1990s,

Explanation:

yellow fever and other tropical diseases

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).