What do historians refer to when they discuss causation

The southern colonies practiced indentured servitude and slavery because cash crops such as tobacco and sugar required many workers. the fishing and shipping industries required many workers. imprisoned debtors were brought from africa to settle the colonies. indentured servitude and slavery were not allowed in the caribbean colonies.

How has our understanding of the first sentence of the declaration of independence changed over time?

((ᵔᴥᵔ)}[ select all that apply questions! ]{(ᵔᴥᵔ)(1.) which of the following causes of the french government's financial crisis spark the revolution? select all that apply.a.the extravagant spending by the courtb. the cost of the seven years' warc. the expenses of running the bastilled. the cost of aid given to finance the american revolution(2.) despite naming himself emperor, why was napoleon pivotal as a french revolutionary? select all that apply.a. he fostered revolts during his reign.b. he frightened the monarchs of europe with the idea of representative governments.c. he established democracies throughout his empire.d. he established republics that embodied the ideas of the revolution.e. his declaration fueled the ire of the revolutionaries to rise up against him.(｡◕‿‿◕｡)