Harry witnesses a burning day, when Fawkes rises again and he talked to the Sorting Hat, worried that it may have put him in the wrong house.
No. But he does appear again at the end as one of the living portraits in the headmasters office.
No, Dumbledore is dead. However his portrait hangs in the headmasters office and Snape often consults it.
The Model of the Huey Helicopter was hanging above the High School Diploma in Col. Blake's office and not in Col. Potters office.
The Greay Railroad Strike Of 1877
Richard Nixon resigns from office, as he was spying on the Democrats during the election, which was illegal. That's all I know. :)
9/11
He finds Ron and Hermoine an tells them everything. Then he goes up to the headmasters office to talk to Dumbledore's portrait and decides what to do with the hallows. That's pretty much it.
Because she is suposed to act like a mother to Aang. And to make her seem older and more motherly they stuffed her belly with a pillow and walked into the headmasters office to listen to Aang punishment.
Tony Blair- he had been in office for four years when the tragedy happened.
He caught pneumonia at his inauguration. He never really served as President since he died one month into office.
It was never passed by the Congress, so it did not happen.
The headmaster's room is commonly referred to as the headmaster's office. It is typically a private space where the head of a school conducts administrative duties, meets with students and staff, and manages school affairs.