The behavioural approach to political science mainly emphasizes on scientific, objective and value free study of political phenomenon. This approach stresses upon the use of empirical as well as scientific methods of study political behavior.
The growing transportation system helped promote economic growth by creating jobs, increasing trade, and jump-starting industrial advancements.
I may not even be close but I hope I at least helped a little bit. Maybe around 5,000.
Probably not even close. So sorry if it is wrong. Hope I helped
Manifest Destiny resulted in the death and displacement of thousands of Native Americans. It also resulted in a lack of resolution to the question of slavery and war with Mexico. (Hope this helps you)