Final answer:
The concentration of ethnic restaurants in different parts of a city is an example of cultural diffusion, which is a process that occurs when immigrants establish cultural practices like cuisine in new areas, contributing to the cultural diversity and globalization of cities.
Step-by-step explanation:
The large concentration of Mexican and Salvadoran restaurants in Oak Cliff, Ethiopian restaurants in North Dallas, and Korean restaurants in the Royal Lane corridor are examples of cultural diffusion. This occurs when people, carrying their own customs and culinary traditions, move to new areas and establish businesses that reflect their heritage.
Over time, these restaurants contribute to the local culture, introducing residents to new cuisines and enriching the city's gastronomic scene. Such establishments not only provide comfort foods for those within the ethnic community but also become places where others can experience and appreciate the diversity of culinary traditions.
These types of ethnic enclaves, often found in urban areas, facilitate mutual support among community members and retain cultural practices. They are reflective of larger societal trends such as urbanization, migration, and global movements of people—which are hallmarks of globalization and result in the melding and mixing of different cultural elements, including food.