An adverb phrase modifies the verb
an adjective phrase modifies the noun
1.b the adjective phrase is "some" it modifies people
2.b the adverb phrase is "instantly" it modifies recognizable
Citizens of the United States are already required to perform certain services. (Apex)
Answer:
The causes are Jim Crow Laws and Violence toward African-Americans, and your effects are more segregated neighborhoods, and the Harlem Renaissance