It affects us in many ways? You could say it was what forced the government to take action to put a minimum wage and minimum pricing on goods such as corn,potatoes,etc. It also made way for the federal government to give loans out to farmers and really push to buy the surplus goods and give it to the poverty line of americans. There's a lot of things it did can you be more specific the great depression has done a lot of things good and bad in the broadest sense.
Both of their works are often about a lot of things, but I'd say they were written to, say, "boost morale" of the american people.
One of the main ways in which the Renaissance sparked the Scientific Revolution was that the Renaissance put an emphasis back on "reason" and experimentation, which brought into question the status quo of religious authority. <span />
As with any system, there will be an expansion of a population that is only halted by the mechanisms of the system being overly stressed and unable to maintain a population over a certain level or threshold. It is natural to fight for resources in a given system. The European population settled and increased, more resources were needed, land, water, food and supplies. The Europeans fought to maintain and increase the people with whom they associated. And unfortunately a prevalent thought at the time, was the Indians were a "savage other", whose lives were not as valuable and so the Europeans eventually destroyed them.