A high-ranking official envoy who represents a state is usually accredited to another sovereign state or an international body as the resident representative of their own government or sovereign, or assigned for a specific and often temporary diplomatic mission. “Salespeople” are people who are known, without a national appointment, to represent numerous professions, activities, and fields of endeavor, such as sales. An ambassador is the highest-ranking government representative stationed in a foreign capital or country. The ambassador is frequently assigned to a specific region known as an embassy, which has diplomatic immunity in the host country for its territory, staff, and vehicles. According to the Vienna Convention on Diplomatic Relations, an ambassador is the highest diplomatic status. Countries can keep diplomatic relations at a lower level by appointing a chargé d’affaires instead of an ambassador. High Commissioners are the Commonwealth of Nations’ equivalents of ambassadors who travel between countries. Papal or Apostolic Nuncios are the Holy See’s “ambassadors.” The foreign government to whom an ambassador is posted must first approve him or her. The foreign government may remove the diplomat’s approval in certain circumstances by branding him or her as a persona non grata, or an unacceptable individual. The ambassador is frequently summoned to their home nation as a result of this type of announcement. With this in mind, countries around the world must have at least a small staff stationed in foreign capitals to help travelers and visitors from their own country. As a foreign service official, an ambassador’s responsibility is to protect the people of their home country while they are in the host country. Cross-national trade has increased as a result of the increase in international travel. Most countries’ national economies are intricately linked to the global economy.