Final answer:
Los Angeles County is named after the city of Los Angeles.
Step-by-step explanation:
The name of the county or municipality is Los Angeles County. It is named after the city of Los Angeles. When the Spanish settlers arrived in the area, they chose a location near what is now downtown Los Angeles for a pueblo (town) because of its fertile soil, consistent water source, and large population of Indians. As the years went by, Los Angeles' only significant advantage over potential competitors in Southern California was its river, and Spanish water law declared that all the water in the L.A. River belonged to the people of Los Angeles.