The neanderthal's adapted to the cold climate by developing tools like the bone needle to sew warm clothing, and used land bridges to spread to new regions.
Trade barriers being abolished would increase trade to a great extent the positive aspects would be that consumer would have a variety of choice to chose from and the trade barriers being abolished means no duties and taxes so the cost of the imported good would be the same in exporting and importing country hence a benefit to the consumer moreover it has negative aspects as well that no duties for the importing country and hence the local producers would be negatively affected as their sales would go down as people would be consuming more of imported good than domestic goods.
According to the movie and the context of it:
The meaning of "mayo on fries" for sociology is that there are other sensible ways to eat french fries. The concept itself has to do with sociological imagination reated in a way of connecting the issue of a person with the forces withih history base.
They define themselves and self confident in their believes and knowledge
