Upton Sinclair's famous novel, "The Jungle," was a scathing critique of the situation that existed in American factories in the beginning of the 20th century. The book highlighted the poor sanitation and worker standards that existed in meat packing and processing plants. As a result of the book Congress enacted two major pieces of legislation seeking to address the problems addressed in the book. The first was the "Meat Inspection Act", and the second was the "Pure Food and Drug Act of 1906."
The presidents.
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Plasticity or brain plasticity refers to the brain's capacity to change throughout life. It is centered around the notion that many aspects in a person's brain can suffer alterations even through adulthood. Basically it defies the idea that we are "hard-wired" as humans. Learning is appointed as a main contributor to the increase of brain plasticity, this is largely due to the brain's capacity to form new connections (synapses) between neurons (brain cells) when presented with new scenarios, it is consistently reorganizing itself, creating and pruning (removing) synapses.
More and more people moved westward to claim lands that were
once inhabited by Native Americans. This
was encouraged by the government. This
also led to several conflicts with Indians that would later lead to a war
between the Indians and U.S. army. In
the end, the west was completely settled completing the U.S. expansion to that
area.
