The 49th Parallel was the initial boundary that divided the American territories from the British territories.
The person who thought that by pursuing our own self-interest we would be actually working for the common good would be Adam Smith.
This was one of his many ideas. The other authors you've mentioned here don't even come close to exhibiting such ideas that are conceptually similar.
Answer: It would significantly affect my quality of life
Explanation: Basic human needs are so-called for something, since they allow the human being to live a quality life. If, for example, I had to give up eating, going to the bathroom, or not having a home, I would suffer both physically and mentally. It is obvious that if I don't eat, I'm going to die in a short time, if I don't have a roof to sleep in, I'm also going to die because the temperature outside is going to hurt me and I would be very depressed mentally.
