Riddle's diary. Every HCX has been destroyed by a different person: Harry Potter (diary), Albus Dumbledore (ring), Ron Weasley (locket), Hermione Granger (cup), Vincent Crabbe (diadem), Tom Riddle (Harry Potter), Neville Longbottom (Nagini).
Horcruxes. There are 7 of them in total. And they are the thing in which you-know-who puts parts of his soul into. If they are not destroyed you-know-who is emortal.
Harry only destroyed one but all of them were destroyed.
Not quite sure what you are asking here but I will give it a go: If you mean who created the Horcruxes: Voldemort. Killing rips apart the soul which then latches on to the first magical thing it can find. If you mean what are the Horcruxes: The horcruxes are the items containing a part of one's soul. Voldemort's horcruxes were: his diary, his Grandfather's ring, Slytherin's locket, Hufflepuff's cup, Ravenclaw's Diadem, Nagini and Harry If you mean who destroyed the Horcruxes: Harry destroyed the diary and the diadem Dumbledore destroyed the ring Ron destroyed the locket Hermione destroyed the cup Neville destroyed Nagini Voldemort destroyed the Horcrux within Harry
No, he destroyed one of the Horcruxes.
When Harry destroyed Tom Riddle's diary
He destroyed the diary and the crown as based on the movie In the book the crown was destroyed by crabbe
He destroyed the diary with a Basilisk fang; the other ones were destroyed by other people.
1
So you mean how was the horcrux in Harry destroyed? Well voldimort tried to kill him but instead destroyed the horcrux inside Harry, so Harry was no longer one of voldimorts horcruxes. This happened in Harry potter 7
Yes, Harry won and Voldemort died.
Harry didn't make Horcruxes, Voldemort did.
Harry was seeking the Horcruxes to destroy them. He already had one of the Hallows, that being the Cloak of Invisibility. The other Hallow was the Philosopher's Stone and the third was the Elder Wand.