<span>the best option is B
the development of more efficient agriculture
The emergence of efficient forms of agriculture especially in Mesopotamia, led to emergence of early city states as food was produced in surplus to feed the town population. it also led to division of labor. this form of agriculture also contributed to sedentary lifestyle and improved nutrition thus explosive population that contributed to city establishments.
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The answer would be Caliph
The soviet union
<span>The soviet union had boycotted UN security council vote regarding the invasion of an aggressor nation North Korea, which had invaded South Korea with an aim of reunifying the two.The soviet union veto power was therefore not used as they had boycotted.</span>
