A) Analysis of data, because you are studying/analysing the source.
It means that you follow the laws, vote, and are loyal to your country.
He was the founder of Islam
The term used to describe a trade route with three stops is "triangle trade" since these three stops can be represented by the three corners of a simple triangle.
The Unwritten Constitution refers to the ideas and principles that are generally accepted as a vital part of the American government, regardless of the fact that they are not in the Constitution.
Many of its aspects are already ingrained into the system.
Hope that helped!!! :)