Final answer:
The subject of this question is History. The question is referring to a man who ran popular Fillmore nightclubs and also managed many of the big acid rock bands including Jefferson Airplane and the Grateful Dead.
Step-by-step explanation:
The subject of this question is History. The question is referring to a man who ran popular Fillmore nightclubs and also managed many of the big acid rock bands including Jefferson Airplane and the Grateful Dead.