Which of the following became the first city in the United States of America to explicitly ban…

Correct answer: Seattle

On 21 February 2023 the Seattle City Council voted 6–1 to pass Council Bill 120511, moved by Councilmember Kshama Sawant. The bill added caste as a protected category under the city's anti-discrimination laws covering employment, housing and public accommodation. Seattle thereby became the first city in the United States to explicitly ban caste-based discrimination. The mayor signed it on 23 February 2023. New York City, Boston and Los Angeles had not passed such a law first.