Answer:
Leningrad, now known as Saint Petersburg
These three events coincide on the 100th day of Donald Trumps presidency. He chose to attend the rally by his supporters in Pennsylvania. Although he failed to show in the said event by the press, the occasion is still successful.
I think it is the cell membrane, but there is a possibility it is the cell wall. I think the cell membrane is correct because the skin does allow certain things into your skin cells, such as water. Similarly, cell membranes allow certain things in the cell. The cell membrane basically acts as the security guard of the cell.
He died in a plane crash with his daughter. You could just look this up....