The correct answer is Philippe Pinel. He was important because he pioneered a more humane approach to treating mental disorders and was among the first people to classify them and find evidence of things such as schizophrenia or dementia. Many consider him to be the father of modern psychiatry.
Socialism is a concept that individuals should not have ownership of land, capital (money), or industry, but rather the whole community collectively owns and controls property, goods, and production. Ideally, in this system all share equally in work and the fruits of their labor. Ideally this is a Christian version of help the poor and needy, sharing equally, but in the real world this can cause some problems as we will see later. Under Capitalism, individuals own and control land, capital, and production of industry. Individuals are free to purchase and own their own homes, cars, furniture, and other goods such as TV, radios, computers, boats, or any thing else you might want. You have total freedom to live where you want and what type of job field you want to pursue. If you have an idea for a new business or invention, you are free to pursue this without government interference. Under this system you have the maximum number of choices in life. This is the 'pursuit of happiness' from the Declaration of Independence.
The industrialized nations wanted to establish themselves as the leading powers in Europe that could dictate anything, from the market to the political activities of foreign countries. For this they needed resources and resources were found in colonies. By establishing mercantilism politics, they could gain power and wealth, both important for accumulating wealth and power.
They named them the Vietcong because of their ruthless power.