A buffer state is a small neutral country between two larger hostile countries. Example: Afghanistan was a buffer state during the early 20th century, between USSR and British-controlled territory of modern-day India and Pakistan. Hope this helps!
Answer:
Popular sovereignty; Kansas-Nebraska Act.
Explanation:
Popular sovereignty is a concept that says that government is created and sustained by the people.
The Kansas-Nebraska Act was a popular sovereignty where was allowed settlers of territory to decide whether slavery would be aloud or not in the new state's borders. This was an important part in the organisation of western territories in 1854.
They are powered by converting chemical energy in gasoline to mechanical energy in the engine.
The answer is "world-systems theory". World-systems theory is a multi-disciplinary, large-scale approach to world history and social change.
<em>Hope this helped! :)</em>
