The workingmen's party and grange movement
The purpose was to establish a government.
An amicus brief is different from a normal brief in that it is written by someone that has interested in the topic but is not party to the lawsuit. Amicus briefs are known as "friend of the court" briefs and they serve to educate.
Answer: The Jutes
Explanation: One of the Germanic tribes that landed in the United Kingdom after the Romans departed