Persians and Byzantines were already weak from fighting among themselves. <span />
Most economies are considered mixed because most have some portion of the means of production under government control. Most economic systems also have some element of the market or capitalism. ... The most vulnerable members of society benefit from a mixed economy because they are offered some social safety net.
The official power to make legal decisions and judgements
It’s B because the North no longer had slaves to farm there crops and the south did so they had an advantage in the area.