What natural material did early humans use for making tools?
copper
glass
iron
ivory

During world war ll, the untied states was a member of the allies axis european theater pacific theater

The "nationalists" and fascists battled against the "republicans" and communists in a civil war in the 1930s in

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.