ANM: after nightmare moon
ANM 0: Nightmare moon is banished to the moon
ANM 200: a new world appears right next to Equestria
ANM 300: first contact is established, new intelligent species known as 'humans' are discovered
ANM 305: Princess Celestia visits the human world, known as 'Earth'
ANM 315: trade routes are established between the two worlds
ANM 400: world travel is available, ponies and humans can live in each world.
ANM 450: humans are aloud into the royal guard and can be granted citizenship in Equestria, the same Is for ponies on Earth
ANM 500: Changelings attack Equestria, humans help repel them off with there advance technology
ANM 510: human technology brought to Equestria, new inventions like televisions and computers are introduced
ANM 700: Earth slowly becomes weaker
ANM 710: areas of Earth are consisted uninhabitable, ponies and humans moved into Equestria
ANM 775: Changling's attack Earth and take most of the land, leaving the Area's uninhabitable. Half the human population is wiped out by these creatures
ANM 850: Earth is fully uninhabitable, all humans have been moved into Equestria, Many countries on Equestria are similar to those of Earth so not a large amount of distress is created
ANM 900: humans and ponies finally settled down, human technology has advanced pony technology greatly, the Royal guard is equipped swords and pistols
ANM 991: Ponyville exiles humans from the town, surprises most of Equestria.
ANM 992: a small changeling group attacks the city of Brismane in Austrotlia, reports of 50 human and pony deaths.
ANM 993: rumors of a secret group of special guards called ' the assassins' Celestia set up. Many believe it is false.
ANM 1000: NIghtmare moon returns, the elements of harmony free princess Luna, but do not defeat nightmare moon entirely, the six mares, or bearers of the elements of harmony. Reported what looked like a human wearing a robe and a hood jump from out of no where, drew a hidden blade and stabbed nightmare moon in the back of the throat, causing her to be defeated. The human then jumped into the Everfree forest and disappeared, only leaving an eagle feather, search groups scanned the area, bit found no trace of the human.
ANM 1001: Discord is beaten a second time, the elements of harmony tried it on discord and it didn't work, that's when the human, supposedly the one who defeated nightmare night. Appeared and fought discord, discord moved the human in front of him and the elements as they fired a second time, hitting the human. But instead of turning him into stone, it made one of his weapons, later defined as a tomahawk, turn into a rainbow colour Before running up to discord and cutting him on the head turning him into stone and fixing his chaos, the human left only leaving yet another eagle feather behind. A clear cut can be seen on discords statue in the royal statue garden. The human is soon rumored to be a part of or the only ' Assassin' that Celestia possibly set up in 993.
ANM 1002: Changeling invasion of Canterlot fails, witness's report see the human, or 'Assassin' as he is usually referred to now, slaying Changling's that attacked them and one report shows him fighting off Changling's with a number of different weapons that had surrounded him. Princess Cadence and Captain of the Royal Guard, Shining armor, that the creature burst through the doors, fought Queen Chrysalis and in the end, as a human witness noted ' he then chucked what look like bombs at Chrysalis and then presses a button and blew her sky f***ing high!'. Once she was gone, shining armor out up the protection spell again, sending the rest of the Changling's from Cantlerlot and back to wherever there hive is. The Assassin fled yet again, only leaving a eagle feather, again, the Assassin has not been seen since.
ANM 1003: Ponyville lifts the 12 year exile of Humans, many humans come back to live normal peaceful lives again.
But one, however, was being sent there by Princess Celestia, carrying robes wrapped around metallic items, and a skateboard.