Supply is how much there is of a product. Demand is how much the product is wanted or needed by consumers. When supply is low, & demand for the product is high, it forces the price to go up.
B, the Treaty of Versailles. The other answers refer to WW2
The 13th amendment to the Constitution of the USA banned slavery throughout the country.
While other primates (such as baboons and red colobus, red tail, and blue monkeys) have managed to thrive in Gombe, chimpanzees have not. Their larger body size puts them at a disadvantage in a restricted habitat, because they must consume more calories (and thus more food) to grow and maintain their weight.
Romans came from the Italian pensinsula and came to Britain in the early first century. It was a gradual process and they slowly started conquering the different parts of the British isles during that time.
Vikings came from the Northern parts of Europe and they started conquering the British isles in later periods.
Both came and wanted to conquer the lands, while Romans were 'established' conquerors and started governing these areas soon by spreading their culture etc. The Vikings on the other hand had pillaing more in mind and did more of that and did not govern that much from the beginning.