How did the invention oWhich sentence best explains how steam power changed agriculture in England between 1810 and 1850? A. Farmers started using steam-powered machines to spray chemical fertilizers and pesticides. B. Livestock farmers began using steam-powered machines to milk cattle and shear sheep. C. Steam-powered railways helped transport and sell agricultural produce far from where it was grown. D. Steamships helped to transport large numbers of people from the United States to English farms.f the cotton gin affect slave labor in the United States? A. There was a forced migration of slaves from the South to the North. B. Slave-owning cotton planters were gradually forced to sell their plantations. C. More slaves were purchased to work on cotton plantations in the South. D. The reduced need for labor on cotton plantations led to a decline in slavery. E. Slaves were moved from cotton plantations to sugar plantations.