The correct answers are A, B, and D. The Second Industrial Revolution was a period of rapid industrialization in the late 19th and early 20th centuries. It was characterized by the growth of cities and urban areas, the mass production of clothing and other goods, and the use of faster and safer methods of transportation. However, it did not lead to the end of child labor in factories and sweatshops, as this practice continued until the early 20th century.
