PLZ HELP 20 points and brainliest

What is the name of the first president

Why might collective bargaining fail, causing a union to go on strike? a the union agrees with the boss about wages. b the boss compromises about work hours. c the factory goes out of business, causing the workers to lose their jobs. d the boss refuses to address dangerous working conditions in the factories.

Why did the free african americans fight for the patriot cause and explain why enslaved africans volunteered to fight for both sides