The answer is because in urban areas there are more industrial jobs
A historian using the historical thinking skill of examining historiography might try to determine how much has already been written about a certain subject before embarking on his or her own project, since this historiography of a topic can help you understand the evolution of "thinking about" the issue.
Answer: D. To give American Indians freedom to settle
Explanation: The Indian Appropriations Act was a continuation of President Grant's Peace Policy.