Answer:
B. The US would be able to protect world peace.
Explanation:
I believe the answer is B and D
Answer:
An alliance is a union or association formed for mutual benefit, usually between countries or other organizations. This is seen as one of the causes of WW1 because countries involved in the developing conflict brought their allies into it as well. Serbia relied on their allies such as Russia, France, and Britain, while Austria called on the Ottoman Empire and Germany.
After the conquest, Rome got access to and control of some very important trade routes. This brought in a lot of business and in turn wealth to the people of Rome . This was what caused a new class of wealthy Romans to emerge.
Northern: No slaves, mostly republican (our democrat) ideas, economy was based on trade and business
Southern: Slavery was supported, mostly (our idea of) republican, their economy was based on plantations and slaves
Hope this helps! Please let me know if I'm wrong or missed something. :)