Given the data in the chart, over which country does the united states have a comparative advantage in oil production?

a. canada
b. russia
c. saudi arabia
d. venezuela

The correct answer is A. The United States have an advantage over Canada in oil production, due to the fact that  less work hours are needed to be able to produce it. This gives a significant advantage since it increases the availability of oil in one country respect to the other  (in the United States it is easier to find oil than in Canada, so it would take less  time to produce it).

answer; i believe that the correct answer is,lies(political rhetoric);

in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.