Which of the Following Is Correct Regarding the Barriers to International

Short Answer

Which of the following is correct regarding the barriers to international trade?
Research clearly demonstrates that differences in culture are the most important barrier
The two general categories where barriers exist are in command and market economies
An embargo is an extreme form of a tariff
Local content laws apply only to situations across international borders
When Google agreed to pay $500 million to settle a case with the U.S. government over advertising revenue earned from Canadian online pharmacies, this was an example of business practice laws being violated