Answer: The power of the strong federal government
The two important goals achieved under the Articles of Confederation were the b and c
People began to develop networks of urban settlements when the rise of agriculture and trade allowed people to have surplusfood and economic stability
Essentially, after Muhammad/Islam conquered Mecca, they went over to present day Yemen and Oman and rekt that area too. Then muhammad died so yea.
One major reason European countries engaged in imperialism in the late 19th century was to (4) obtain markets for their manufactured goods. They launched a new period of colonial expansion, thus discovering new markets.