The formation and political fortunes of Qiaopei Group and Yingchuan Group;

To sum up the achievements concluded from above, there is a conclusion on the key factors about junior high school students\' interpersonal circumstance, which are the feeling of security and the sense of belonging.

The conclusion is that both the Louisiana Purchase and the Purchase of Alaska were the results of the scrambles among the European powers and the USA\'s fully taking advantage of the international opportunities.