Historians argue between slavery as the cause or the unrest between free and slave states. Most agree that Lincoln being elected was a deciding factor to the cause of the Civil war. I hope this information has helped. Send a link to the article if you want the actual answer.
They led to the rise of nationalism because it was mostly about fighting foreign forms of imperialism. Young Turks wanted a Turkey without the ottoman monarchy and without foreign influences, while Japan won the Russo-Japanese war and became aware that they are an important military force in the world. The Boxer rebellion was about Chinese nationalists wanting to get rid of all types of foreign influence, both governmental and religious. All three involved people with strong nationalistic tendencies who opposed foreign influence.
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Nervous? I’m not getting the question here. Who’s Mrs flint???