I'm sure the answers d, because it would help way more than the other options you'd want to know first hand what happen the only way to do so is to speak to those who fought in the war.
Answer:
idek juss wanted points ion:
The answer is slavery. The Republicans were anti-slavery, while the democratic south was pro slavery. Eventually that, and a couple of other things, led to the Civil War.
Sorry if this was a bit late, Brainly had just recommended this question for me to answer, but I hope this helps!
Answer:
Imperialism - Nations competed for more land, colonies and raw materials. Great Britain and Germany competed industrially, which led to these nations needing more raw materials. Also, Austria-Hungary controlling the Slavic land of Bosnia, which Serbia believed belonged to them.
Nationalism - Nationalism was very strong in both Germany and France. Germany controlled the territory known as Alsace-Lorraine, which they gained from France after the Franco-Prussian War. France wanted that land back.
Alliances - Secret alliances were formed prior to the outbreak of the war. After the Assassination of Franz Ferdinand the Archduke of Austria-Hungary the alliance systems went into effect leading to many nations protecting one another (i.e. Russia protecting Serbia from Austria-Hungary).
The colonists felt nothing but resentment about the Navigation Acts. The Navigation Acts limited their trade with nations other than England.