I believe d is your answer sorry if I’m wrong.
Answer: Delegated Powers (Sometimes called Enumerated/ Expressed)
The constition specificly states in article 1 section 8 that these powers control the federal government. (Hope this helps)
In 1859 50% of the nations wealth, stocks, bonds, land, cash was in slaves owned by southerners. They lost everything. The north pay less on the south slavery was not finish and they where trying to go to the north for better jobs and freedom the south had force slaves to work.
Hope this helps :)
While there was much buildup pre-World War I, it is commonly understood that the assassination of Archduke Franz Ferdinand on 28 June 1914 in Sarajevo pushed the world to war as a result of a complex web of treaties and diplomatic obligations that quickly were triggered and resulted in sides being chosen.