Final answer:
The most favored stance in US foreign policy is internationalism, particularly after World War II where containment of Communism was a major goal. US policies have incorporated various approaches, such as neoconservatism and coalition-building, reflecting a multifaceted engagement with global issues.
Step-by-step explanation:
The United States foreign policy stance that has been predominant since World War II is internationalism. The main policies during the Cold War era included containment of Communism, deterrence, détente, and arms control. Different administrations have applied various foreign policy doctrines, but there has been a consistent engagement with international affairs.
In more recent times, the U.S. foreign policy has demonstrated an integration of different schools of thought. It has been neoconservative in its unilateral use of drone strikes, but also internationalist in building coalitions and participating in organizations such as NATO. Furthermore, the U.S. has been involved in providing foreign aid for humanitarian reasons and has supported movements that seem to favor democratic advances, such as the Arab Spring.
Although the U.S. has a history of avoiding entangling alliances that might require military commitment, in the post-World War II era the United States has embraced a more active role on the global stage. This shift was partly in response to the decline of European powers' ability to maintain global order, thrusting the U.S. into a position of increased responsibility and influence.