By Leah Douglas (Reuters) – Black farmers in the United States lost roughly $326 billion worth of acreage during the 20th century, according to the first study to quantify the present-day value of that loss. Land loss is a contributor to the racial wealth gap in the United States and an issue that has marred the relationship between the U.S. Department of Agriculture (USDA) and minority farmers. “Wealth and land is one way in this country that you’re able to grow opportunity for your family,” said Dr. Dania Francis, professor of economics at the University of Massachusetts-Boston and lead auth…