How could the historian better understand the reason for the cultural differences between ancient Romans and modern Americans? O A. Evaluate for bias by finding out which modern historians write positive portrayals about the Colosseum O B. Study historical context by learning more about the types of animals that fought in the Colosseum O C. Study historical context by examining letters written by Roman fans of the Colosseum D. Evaluate for bias by determining whether people's prejudices allowed them to tolerate slavery​

Export and import is global business that happened in all countries. The economy of all country depend on export and import.

Explanation:

Export and import is a services which is used by most of all country. It is like the that the service produced in country and purchased by other country. It does not mean that what is the service or goods.

There are three ways that can help in boosting Export and import services.

Trade protectionism: It gives the advantages to the country. It is related to the tariff. It raise the price of the import. It uses subsidies. For example Smooth Hawley tariff.

The second one is trade agreements. They boost the exports by reducing the trade protectionism.

The third is the way to lower the the currencies value. By lowering the interest rate.