"Throughout history, technological and scientific advancements have played an influential role in the way we grow by responding to and spurring agricultural shifts, For hundreds of years, farming was completed by manual power, and people only had access to locally-grown food. By the 20th century, machinery had largely replaced animal-powered implements, pre-packaged foods had appeared in markets, and railroads brought crops and meat from America's breadbasket to the rest of the nation. At every stop of the way, African Americans have played a role in shaping American agriculture through advancements in farming techniques, equipment, preservation, processing, and transportation."