Which 19th-century economic condition was the basis for the ideas of Karl Marx? A) Capitalism contributed to a widening gap between the rich and the poor. B) The availability of material goods increased. C) Access to certain resources changed how goods were produced. D) People left farms and moved to the cities in search of work.

Which 19th-century economic condition was the basis for the ideas of Karl Marx? A) Capitalism contributed to a widening gap between the rich and the poor. B) The availability of material goods increased. C) Access to certain resources changed how goods were produced. D) People left farms and moved to the cities in search of work.