theres no events? im going to guess ww1?
<span>A system for exchanging currencies between countries. Because they need to be able to redeem the money they earned. Without that system Jiang would not be able to sell things with other Countries.</span>
Serfdom, condition in medieval Europe in which a tendency farmer was bound to a hereditary plot of land and to the will of his landlord. The vast majority of serfs in medieval Europe obtained their subsistence by cultivating a plot of land that was owned by a lord.
Finally, in 1380, Hongwu had Hu and his entire family arrested and executed on charges of treason. Using this as an opportunity to purge his government, the emperor also ordered the execution of countless other officials, as well as their families, for associating with Hu.
The answer is the National Debt, when he started the national debt was 22.5 billion, when he left it was 258.5 billion .