... relations with many countries, including China and the USA. Vietnam and the United States of America signed a trade accord in 1991, nally allowing Vietnamese goods into the USA.Vietnam’s national ... formal occasions—white jacket, black pants, and black tie; women should wear long dresses. Black is acceptable to wear at a formal event if it is accented with color.●Be certain to wear ... oered again, accept; it is considered an honor to have the last bit of food.●To entertain a small group, take them to an excellent restaurant in a prestigious hotel. For a large group, arrange...