Select all the correct answers. Napoleon’s Russian campaign was unsuccessful despite the fact that Napoleon won most of the battles. Which two sentences best describe the reason for the campaign’s failure? The Russian army wore out Napoleon’s army by retreating a long way into Russia before fighting a major battle. The Russian army teamed with British forces to attack Napoleon’s forces in Moscow. The Russian scorched-earth policy ensured that Napoleon lost many soldiers to hunger and cold. The Russian emperor signed a treaty with Austria, causing Austrian forces to intercept Napoleon’s army on its way back.