C). belief in the underdog and the right of all nations to self-determination
Answer:
D-Day
Explanation:
D-Day was the largest amphibious invasion in military history. According to the D-Day Center, the invasion, officially called "Operation Overlord," combined the forces of 156,115 U.S., British and Canadian troops, 6,939 ships and landing vessels, and 2,395 aircraft and 867 gliders that delivered airborne troops.
1.) rich resources, 2.) skilled mechanics, 3.) The booming economy, 4.) stable government, 5.) people worked on improving their lives instead of worrying.
