"Steam engine" is the one invention among the choices given in the question that <span>was the basis for the major developments in American transportation. The correct option among all the options that are given in the question is the first option or option "a". I hope that this is the answer that has come to your help.</span>
1. The church becoming a political force (Europe); this began and contributed to the so called Dark Ages in Europe. The church was controlling most of the continent and everything that was happening on it.
2. The rise of the Mongol Empire (Asia); the biggest land empire the world had ever witnessed made the trade between Asia and Europe much easier and safer, and also after the initial bloodshed, it brought the period of peace. Unfortunately through the trading routes spread the plague (black death) as well.
3. Emergence and spread of Islam (Asia); in a very short space of time it became a dominant religion in the Middle East and started spreading very quickly. The empire led by this new religion became a strong force and was threatening the Christianity in Europe.
The largest confederate prison during the civil war was the Andersonville prison. The conditions and Union POWs very much resembled the Nazi concentration camps from world war ll.