Genesis 2 includes geography because God wanted to show that He had prepared the Earth in anticipation of the arrival of man. The Bible reveals that before the fall human culture, or the way people interacted with each other and the world around them, was vastly different than after the fall. Before the fall man did not have to toil in the dirt to produce food, after the fall he did.Before the fall Adam and Eve had no ideas of human nakedness or shame afterwards this came. God intended for Israel to be a beacon of hope for the world, an example of how they were to interact with Him and He with them. Christians are to conform to the laws and traditions of their culture as long as these things do not contradict with how God demands that we interact with the world. Following Gods laws will never separate a person from mans law unless the law of man is in the wrong.