I assume the middle ages are called the dark ages because that is when the great depression was or something im not sure
Before Mao Zedong: China was underdeveloped with healthcare facilities and educational institutions only serving the privileged upper class. During this period, there were outlaws that performed despicable deeds such as massacring people. Furthermore, the country's ruling power was divided into several tribe chieftains, warlords, and dynasties. In short, there was no central ruling body. Slavery was commonplace and women were not respected and were treated as possessions.
After Mao Zedong's rule, the women were finally recognized and given the same privileges that men had. Warlords which have been dominating their territories and living off the people's hard earned tributes for countless years were uprooted. Slavery as well as headhunting, which were common practices, were greatly discouraged and over time, were phased out. Poverty was greatly diminished and the people's life expectancy lengthened. With more access to healthcare facilities, the previous life expectancy which was set at 40 increased to 70.
General Robert E. Lee was responsible for the Confederate loss at Gettysburg.
