1. what was operation barbarossa? a. the nazi plan to invade the united states b. hitler's invasion of great britain c. the allied plan to defeat nazi germany d. hitler's invasion of russia 2. why was the battle of midway such an important battle? a. the united states advanced to 100 miles of the japanese mainland b. the u. s. navy completely destroyed japan's ability to wage war in the pacific c. the battle ended japan's advances in the south pacific d. the battle proved that japan's navy was superior to the u. s. navy.