How was the demand for labor on the "slave frontier" met?

The correct answer is:

Slaves were sold in the South by owners in the border states.

The slave frontier´s expansion led to an increase in the slave trade. This western boundary passed through the middle of Georgia in 1790, and by 1830 it was stretching through Louisiana. By 1860 it was able to extend to Texas. This development in territory raised the number of slave states and the acquisition of land also presented an opportunity for planting crops that needed laborers.

the correct answer is "c: merchants" and "e. soldiers".

the song dynasty was known as the first government in the world to introduce paper currency. it was also the first chinese government which established a permanent standing navy. finally, the first compass was introduced during this period of government.

all of these innovations heavily affected commerce in a positive way. printed money dynamize commerce within the borders of the empire due to an easier way to quantify value during the trade. the introduction of the compass trade routes to be faster. finally, the introduction of a standing navy regulate trade routes.

regarding military affairs, gunpowder was created during this period. this was a tremendous improvement that was widely utilized by the military in order to innovate in the manufacturing of weapons.

not sure might be he acquired the entire oregon territory from great britain