Final answer:
Polk Street was the center of entertainment described, bustling with activities from theatre outings to 'Cadian balls, and transforming from lively to peaceful as the night progressed.
Step-by-step explanation:
The street in Grand Coulee with all the entertainment, known for its vibrant night life, was Polk Street. The description showcases Polk Street as a bustling hub of activity, with various inhabitants of the street enjoying the evening.
From the cheerful throngs indulging in amusement, filled with theatre-goers, strollers, and entertainers, to the clamor of children and the presence of prominent women from nearby avenues, Polk Street transformed from a crowded center of social life to a quiet state of rest as the night advanced. On days of special events like 'Cadian balls, the community gathered to enjoy music, dance, and socialize in a spirited yet orderly manner.