Qin Shi Huang, The First Emperor, standardized China's currency, writing, and measurements which helped in the creation of a_.

centralized state

Explanation:

Also known as the 'First Emperor of Qin', Qin Shihuang who ruled between 221 to 206 BC engaged in the military conquests of many surrounding states. He finished the Great Wall of China and constructed the terracotta army. In his time, the currency of China, its writing, and measurements were standardized in order to have a unified  and centralized state.

After this unity was achieved, they could then engage in military conquests and construction projects, unitedly. In his time, all men were made to serve in the military for at least a year. Shihuang commanded respect from everyone, and failure to submit to him resulted in death.

after the civil war, and with the termination of slavery, the south was faced with a big problem; what was supposed to happen and how they were supposed to deal with the freedom and the rights that black people and freed slaves had gained as a result of the north defeating the south and forcing the end of slavery. first, most, if not all, of the workforce of the south came from slaves and they did not have an option to replace the loss of said workforce. second, particularly in the south, people were convinced that black people were lesser, less intelligent, less capable and less smart than whites. this posed a huge problem for them. also, southerners were faced with another issue; freed slaves now had a say in how their lives would be lived and the right to politically choose the way they would be governed. people in the south did not want to accept this, none of this and this opposition and the conflicts that arose from it, not to mention the afereffects of the war, forced the congress of the time to enact and enforce the reconstruction plans that had been proposed by president andrew johnson.

e imma say squidward tentacles