Which type of trade barrier is created by mountains, oceans, and other natural features of the earth?

Why did the settlement of east texas stop in the late 1710s

What are the relation of community dynamics and community action to applied social sciences?

Mike and his wife, amanda, are arguing about his in-laws. mike doesn’t want them to visit because they fight all the time when they come to the house and he is worried about the effect that their fighting is having on mike and amanda’s children. amanda finally yells out: “what about our fighting? ” mike replies, “well, that’s different. we fight because we’re having a disagreement, they fight because they hate each other! ” this is an example of