The answer is a your welcome
Answer:
Altamont Concert
Explanation:
Altamont Concert organized by The Rolling Stones just 3.5 months after the Woodstock on December 6, 1969. Woodstock concert had a huge amount of participants like around half-million where the peace & music promoted for three days. However, in the Altamont Concert, the idea was to create the same environment but it didn't happen. Instead of peace and a well-organized concert, there was a conflict in the Altamont Concert.
air pressure is the answer
