Answer:
B. whether black people, both enslaved and free, had basic citizenship rights.
D. whether territories could outlaw slavery
Explanation:
After the Civil War, the United States went saw a <em>major transformation</em>, in which it transformed from being an agricultural society to an industrial one.
Many factors like the massive supplies of raw materials (like timber, iron ore, oil, and others), the development of new technology that made the tasks easier and faster, an important workforce constantly growing by the flow of immigrants, and a new breed of ruthless business leaders were fundamental into the major growth that manufacturing in that time and the following years.
Therefore, the correct answer is Manufacturing.
You put in cause #1 one thing that happened in the event and in effect #1 whatever happened say what that did for example say someone dropped skittles the effect would be a mess was made and then do the same for the 2nd case and effect
English :) hope this helped<span />