46. American food began to affect the rest of the world in the 1960s.
47. Fast foods became one of the America' strongest exports since the 1970s when franchising for McDonald's spread and other parts of the world.
48. Traditional meals gave way to quick lunches and dinners as other countries imitated American cultural patterns.
49. However, Americans had become more conscious of their diets since the late 20th century.
50. Cooks started to rediscover many world cuisines by combining local fruits and vegetables with ingredients and spices from immigrant kitchens.