How has the world changed as a result of World War 1?

On 11 November 1918, the guns fell silent and the war came to an end, but its impact was felt for many, many years after. World War One changed the world in ways that nobody could have imagined. New weapons and technologies were developed and used that led to more destruction than any war had seen in the past.

Explanation:

ok sorry the answer is a. by their religion

d.

the northwest territory became the most densely populated area in the u.s.