The second industrial revolution happened in the united states following american revolution. the civil war. world war ii.

Civil War

The Second Industrial Revolution took place after the Civil War. It was driven by the abundance of natural resources to power factories and abundant labor supply. It was also favored by strong government policy, new sources of power, railroads and entrepreneurialism  

1. the Civil War.

2. The Bessemer process improved the production of (steel).

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

a. the astrolabe could determine the correct latitudinal location of the ship