This graph shows the average size of American farms from 1910 to 1990. What most likely explains the change in the size of farms? Average Size of Farms in the US 1910-1990 500 Farms became less productive, and the average size decreased Farms became more productive, and the average size increased. Farmers embraced new technology, which allowed farms to shrink. Farmers rejected new technology, and farms had to expand as a result, 300 Average Acres per Farm 200 1910 1930 1950 1970 1990