Answer:
The enemies had AK47s and we had m1 garands which were inferior to there automatic rifles and many us citizens disapproved of the war so the U.S had less numbers than other armies and finally the enemy also knew their terrain so they could hide and ambush their enemies or catch them by surprise.
Explanation:
Blitzkrieg. It was a huge strategy that involved air attacks, tanks etc.
Sectionalism was caused by the issue of states’ rights to the slavery and personal treatment of slaves. Sectional strife was caused by expansion of peculiar institution into western territories... initially most northerners ignored the issue of slavery as it had a minimal role in their everyday life.
I hope this helped have a good day human :)