During the 20th century, battle included devastating effects on civilians due to advancements in weaponry. what were examples of the change in weapons?
-air attacks from planes on non-specific targets but city blocks.
-submarines were now common.
-troops carried bayonets as well as guns.
-the use of the first hand grenades.

Which statement describes the primary purpose of the european union? question 1 options: to protect european nations in the event of another world war to work together to strengthen europe and benefit all member nations to prevent alliances from forming between member nations to share resources and make economic trade easier between coal and steel companies