Answer: The event that has increased the rate of cultural diffusion since the 1980s is globalization.
Step-by-step explanation:
The term "globalization" is commonly used to refer to the increased rate of cultural diffusion and integration that has occurred since the 1980s. Globalization can be defined as the interconnectedness of individuals, companies, and countries through international trade, communication, and movement of people, ideas, and technologies. This phenomenon has resulted in a blurring of national and cultural borders, and the emergence of an increasingly globalized culture, with a shared language, values, and practices that transcend national boundaries. The spread of technology, particularly the internet, has been a key factor in accelerating cultural diffusion and globalization.