The answer is:
They were enslaved in the South.
In the market place entrepeneurs compete for the dollar of the consumers. They are willing to interchange goods or sevices for money. The success or failure of an entrepreneur depends on how consumers approve or disapprove the products or services offered by entrepreneurs. If the product or service is seen as good or high quality then that entrepreneur will surely have high demand and will continue in the market place. If the product or service is seen as bad or bad quality then that entrepreneur will disappear.
It was primarily "<span>d. the vulnerability to invaders from the north", since the Mongol territory was rapidly expanding--making the Mongol warriors all the more powerful. </span>
The people have the right to overthrow the government is it doesn't protect their rights. This is called being a tyrant government and it is not allowed in the constitution. <span />
