I believe the answer is B and D
Answer:
Instead of coming to terms with each other in a suitable fashion, sectionalism drove each person to be "a member of their state", instead of being a "american". This led to conflicting interests, which boiled down to war. Each person went to war for reasons of their state, instead of what Lincoln wanted, the preservation of the Union.
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In many ways, the encomienda system resembled a feudal system: The Spanish monarchy granted conquistadors, soldiers, and other officials control over a specific number of Indians, and later Africans, as well as the lands on which those Indians lived.
Congress cannot set political conditions on states.
Barter is a system of exchange where goods or services are directly exchanged for other goods or services without using a medium of exchange, such as money
