Martin Luther posted on the door of the catholic church a 95 theses, which was basically to criticize the catholic church for their use of indulgences and wrong practices. Hope this answers your question.
John Adams and Thomas Jefferson led partisan political factions or parties into the national elections of 1796. Washington even sought advice from two opposing partisan leaders, Alexander Hamilton and James Madison. Displayed here is a draft of Washington's Farewell Address, which Hamilton helped write.
During the Gilded Age, when factory workers were injured at work, they didn't receive anything. Their families would often starve to death, because they weren't making money to buy food.
#1 - Fluffy the dog in Harry Potter and the Philosopher's Stone is relevent to the guard dog of the underworld called Cerberus.
#2 - The scar on Harry Potter's forehead resembles the Greek god Zeus.
#3 - Fluffy and Cerberus both fell asleep due to music.
#4 - Hermione has the same name as the Greek daughter of King Menelaus of Sparta and Helen of Troy.
#5 - The hippocampus does show up in Harry Potter and Greek mythology pulling the greek god Poseidon's chariot.
#6 - Argus, the caretaker of Hogwarts, has the same name as the Hundred-eyed one, who is also named Argus.
#7 - Greek gods have a nimbus, not a broom, but a cloud
#8 - Harry meets a sphinx in the Goblet of Fire, and answers it's riddle, Oedipus solved a sphinxes riddle in greek mythology.
#9 - Minerva McGonagall's first name is the same as Greek goddess Athena's roman name.
#10 - Centaurs are top-half human and bottom-half horse, and they show up in Harry Potter (In the Forbidden Forest) and in Greek mythology.
There you go... You now have ten things that are connections between Harry Potter and Greek mythology.