I think that the best answer is the geographic location: many other countries (Sweden for example) have tried being neutral at different times but did not manage to: but the fact that the US has only two boundaries, and that both other countries also have a history of fighting from independence from a European power, makes it possible that unless US decideds to get involved in international politics, it can be "left alone".
I need the image to help to answer this question
Cultural unity was less apparent than its diversity, Africa is home to 2000 distinct languages.
The answer is he Unified China. Hope this helps!
There are three main reasons for European Exploration. Them being for the sake of their economy, religion and glory. They wanted to improve their economy for instance by acquiring more spices, gold, and better and faster trading routes.
Your Answer is A
Hope this helps