Answer:
The answer in A. The adoption and spread of Roman law and Christianity
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--Koda^^
Essentially through dropping the atom bomb on Hiroshima and Nagasaki. The Japanese soldiers had been fanatically loyal to the Emperor and fiercely defended the Pacific islands leading to heavy casualties amongst the American forces.
After the atom bomb was used Emperor Hirohito surrendered and Japanese soldiers followed his order to stop fighting.
The labor movement in the United States<span> grew out of the need to protect the common interest of workers. For those in the industrial sector, organized </span>labor unions<span> fought for better wages, reasonable hours and safer working conditions.</span>
Steel mills were located in areas where coal and Iron core were readily available.