I rhink the answers should be a and b
<span>* Victory in 1842 when the Massachusetts Supreme Court ruled in Commonwealth v. Hunt that "peaceful unions" had the right to negotiate labor contracts with employers. * In the 1840s and 1850s, most state legislatures in the North passed laws establishing a ten hour day for industrial workers.</span>
He used this to keep the communists away because they were weaker than us and could not afford to be attacked; we could.
China had 5000 years of Chinese history