((This really is a from scratch story, mostly based on a story I wrote when I was 15. The History of the Mandalorians I have compiled from various sources on the web into what I think is as accurate as it gets with science fiction. I have not plagerised, it's all in my own wording but I will give credit to the sites which I used as resources for information.))
Resources for the History of the Mandalorians:
Wikipedia
http://en.wikipedia.org/wiki/Dates_in_Star_Wars)
answers.com
http://www.answers.com/topic/mandalorian)
Mandalore History
http://home.sol.se/Mandalore/history.htm)
Mandalore System Biography
http://downtime13.tripod.com/systembio.htm)
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Jaster's Legacy
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History of the Mandalorians
The Mandalorians are a race almost forgotten, but their legacy has survived thus far and refuses to be lost in the overwhelming pages of the Galaxy's history books.
They are older than the Jedi, and they have survived struggles like no other race. They have endured the hardest hardships and fought through the longest wars. They have suffered the most painful losses and strived like no other to endure.
It all began when a settler ship's hyperdrive malfunctioned and sent thousands of regular people to an unfriendly environment where starvation and wild animals threatened to wipe them out. They survived and grew stronger; they became the Mandalorians.
For thousands of years the Mandalorians remained isolated from the rest of the galaxy and enjoyed peace and prosperity. That peace was stolen from them by a warlike alien race known as the Vuanna who attacked and killed without reason. War it seemed was the destiny of the Mandalorians from nearly the begining of their long history, war that lasted so long they forgot a time without it. War grew the Mandalorians into a strong race and they advanced in tecknology and defeated the Vuanna bringing an end to that war, but war would not leave the Mandalorians alone.
The Mandalorians began expanding past their system and found the Sith. War with the sith began and lasted until Mandalore, the leader of the Mandalorians was defeated by Ulic Qel-Droma. The Mandalorians swore allegience to Qel-Droma and the Sith, they won many victories in the Sith war, but the Sith were defeated and the Mandalorians returned home.