Acomparative advantage is the ability of a country to produce a particular good or service at a lower than another country. a. production cost b. opportunity cost c. absolute advantage d. manufacturing advantage

The correct answer is b. Opportunity cost. 
Comparative advantage is when the country produces goods and services for a lower opportunity cost than other countries. The opportunity cost measures a trade off, such that a country with comparative advantage makes the trade off worth it. Therefore, the advantage of buying their goods or service outweighs the disadvantages.

Cherokee  removal, part of the trail of tears, refers to the  forced  relocation between 1836 and 1839 of thecherokee  nation from  their lands ingeorgia, south carolina, north carolina, tennessee, texas, and alabama to the indian territory (present day oklahoma)  in  the thenwestern united states, and the resultant deaths