Answer:
Referendum
Explanation:
ordinance of Secession was a document that's crated to explain the reason why Several southern states decided to secede from United States in 1860.
In order to reach that conclusion, each of those states held a Referendum.
During a referendum, a state gathers all of the electorates that represent the people of that states and make a direct/universal vote to a certain proposal. Those southern states decided to held this referendum because difference in opinion about slavery between southern states and northern states at the time.
the answer you are looking for is 4
The minerals and elements in the soil.
