Name a major factor that contributed to Allied victory in World War II early on.

• A. Isolationist policies
• B. Air superiority
• C. The use of long-range nuclear weapons
• D. A peacetime diplomacy approach

Answer: (B)

Air power decides late battles and the pace of campaigns by letting you control supply lines, reconnaissance, and striking targets behind enemy lines. In the early years of World War II, achieving air superiority allowed the Allies to protect crucial routes, disrupt German war production through strategic bombing, and provide essential support to ground forces. The Battle of Britain illustrates this idea clearly: denying Germany air dominance over Britain prevented an invasion and kept open the path for sustained Allied offensive operations. Without such control of the skies, enemy advances would have faced much stiffer resistance and longer, costlier campaigns. The other options don’t explain why victory came early—their approaches wouldn’t translate into the immediate military leverage air superiority provided.