Questions: By the spring of 1946, Truman's administration favored A global economy based on free trade. The construction of military bases around the world to keep aggressors from harming the United States. The swift reconstruction of postwar Germany and Japan. All of the above.

The answer is A global economy based on free trade.

By the spring of 1946, the Truman administration was indeed focused on establishing a global economy based on free trade. This was part of a broader strategy to prevent future conflicts and promote economic stability worldwide. The United States aimed to create an international economic order that would encourage open markets and reduce trade barriers, which was reflected in initiatives like the Bretton Woods Conference and the establishment of institutions such as the International Monetary Fund (IMF) and the World Bank.

While the United States did establish military bases around the world during the Cold War, the primary focus in the immediate postwar period was on economic reconstruction and establishing a stable international order. The construction of military bases became more prominent later as the Cold War tensions escalated.

The reconstruction of Germany and Japan was indeed a priority, but it was part of a broader strategy that included economic recovery and political stabilization. The focus on free trade and economic integration was a key component of this strategy, as it was believed that economic stability would lead to political stability and peace.

While all these elements were part of the broader U.S. strategy during the postwar period, the emphasis in the spring of 1946 was particularly on establishing a global economy based on free trade. The other elements became more pronounced as the Cold War developed.