Which of these increased rapidly during the first several decades of the second industrial revolution? (a) income equality and crop prices.(b) tariff rates and income tax revenues.(d) migration to the u. s. and union activism.(d) government regulation and industrial wages.

The correct answer is C) Migration to the U.S. and union activism.

What increased rapidly during the first several decades of the Second Industrial Revolution was Migration to the U.S. and union activism.

The Second Industrial Revolution in the United States is the period of 1870 to 1914 where the country had new natural resources for the many states it had, and factories increased in number to manufacture new goods needed to finish up with the modernization of America. Industrial men, capitalists, invested money in new industries, European migration represented cheap labor that worked in the fabrics, and Native Americans were held in the Reservations.

Industries focused on building new roads, railroads, iron and steel in a massive way, oil, and new machines.

choices? lol!