To develop accurate calendars.
I believe the answer is: Naturalistic theory
Naturalistic theory refers to the theory which see that everything that happen in universe could always be explained by logical approach. In research, having this theory would make researchers reluctant to make conclusion without objective evidence.
The answer is C a census includes the entire population where as a sampling only a part
Okay so. Slavery, sectionalism and states' rights all tie into the Civil War because they all feed off of one another. The North didn't believe in Slavery but the South did which leads us to States' Rights. The North was angry because sectionalism was made legal, resulting in the expansion of Slavery, leading us to sectionalism. The North and the South The North and the South had very different beliefs as comes to slavery, So eventually 11 states seceded into what was called the Confederates and the North was the Union.
I'm 92% sure i'm right :)