The main cause of the second industrial revolution was, natural resources, abundant labor supply, strong government policy and new sources of power.
Your answer would be A - The fertility rate is low.
I hope this is helpful. ✧
the answer is True ...................
Answer: Gompers helped found the Federation of Organized Trades and Labor Unions in 1881 as a coalition of like-minded unions. In 1886 it was reorganized into the American Federation of Labor, with Gompers as its president. With the exception of one year, 1895, he would remain president of the organization until his death.
Hey there! It was the 3rd estate that was taxed the most. :)