answer with your own words please

Q1: Walmart has recognized numerous opportunities to expand in foreign countries and has assessed many foreign markets, including Brazil, Greece, Mexico, Portugal, Singapore, and Thailand. It has opened new stores in Europe, Asia, and Latin America. In each case, the firm was aware that it did not have sufficient understanding of the culture of each country that it had targeted. Consequently, it engaged in joint ventures with local partners who knew the preference of the local customers. a. What comparative advantage does Walmart have when establishing a store in a foreign country, relative to an independent variety store? b. Why might the overall risk of Walmart decrease or increase as a result of its recent global expansion? c. Walmart has been more cautious about entering China. Explain the potential obstacles associated with entering China