The correct answer is option A. "the Soviet Union built them too". The nuclear arms race took place during Cold War, and was a competition for supremacy in nuclear warfare between the United States and the Soviet Union. Under this competition if the United States built hydrogen bombs, the Soviet Union would built them too in order to stay in line with his competitor.
Florence<span> became outstanding in banking and woolen manufacture. In the fifteenth century, Naples, </span>Milan<span>, and </span>Venice<span> ranked among the five most </span>were<span> intimately connected with the </span>rise<span> of new classes as the result of </span>economic<span> growth.Thus there </span>were<span> Gulfs and Ghibelline in many </span>Italian cities.