I need to have 20 characters to post the answer so I’m just gonna say hope this work YEET
Answer:
The Great Depression was a severe worldwide economic depression that took place mostly during the 1930s, beginning in the United States. The timing of the Great Depression varied across the world; in most countries, it started in 1929 and lasted until the late 1930s.
Explanation:
One would be nationalism because it forced all nation states to integrate together and become one same culture and religion ,knowing that not all people have the same religion it would disrespectful to that state and imperialism because It made Europeans seek for land to make more empires and establishes territories such as Asia and Africa .Cause conflict between these multiple areas
It's b, because a mixed economy refers to socialism, where they have some control over economic decisions, but not all.