The Civil War time period was during the Civil War, after the War was the Reconstruction time period when they were reconstructing the country :)
1st Question:
The Framers wanted a division among the branches of government, in which some power was given to the judicial branch, some to the legislative branch, and some to the courts. Compared to a presidential system, the legislative branch in a parliamentary system has much more power.
2nd Question
The framers needed to find a way for representatives to fairly represent both population and states, meaning that although state population affected representation, it wouldn't be so much so that small states like Rhode Island had almost no voice. To do this, the created a bicameral legislature, with each state having equal representation in the Senate and the House having numbers of reps based on population. <span />
The development of railroads was one of the most important phenomena of the Industrial Revolution. Trains provided supplies and equipment and a lifeline of the army. Trains made a big impact on the citizens. Railroads were visible symbols of industry and modernity during the Civil War.