Why were the “hollywood ten” sent to prison?

Originally, 40 people were suspected of holding Communist loyalties  or being involved in harmful activities (the main reason the Hollywood Ten were arrested). The "Hollywood Ten" denied the HAUC hearings, claiming it was a violation to their Civil Rights. Some even comparing the hearings to the actions of Nazi, Germany. One of the Hollywood Ten, Lawson, commented "I am not on trial here, this committee is on trial."

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         https://www.history.com/topics/cold-war/hollywood-ten

the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.