The enlightment basic ideology is freedom. Freedom to choose your own opinion, freedom to do what you desire, freedom to pursue something that you want, etc.
The independence itself is the embodiment of enlightnment because independence is the act of break free from a restrictive rule or establishment that previously dictate what you should and shouldn't do.
Roads, canals, and railways were three major components of transportation improved during the first industrial revolution. People used the roads as the basic way to transport the goods from one place to another. Transporting goods by canal lowered the risks of smashed products during route.
Obama makes the point that America is powerful because has the potential to constantly reinvent itself. He mentions that America has enough productivity, innovation and capacity to do so. It is also a land which protects the interests of everyone and not narrow interests anymore, and this is path that had to be followed from that moment on.
The correct answer here is the last option.
Legislative moves at an ever higher pace and the number of bills that is introduced during the legislative sessions has increased. The state legislatures introduce though more bills than the federal legislature and the percent of the bills they propose is on the rise.