Answer:
In the late 1800s, meat and grain were procesed in Chicago and sent eastward by railroad.
Explanation:
In the late 1800s Chicago was already the most important railroad hub in the U.S., with many railroad lines radiating from the city and being the most interchange point of freight traffic. Many lines connected Chicago with the wheat fields of Illinois and Wisconsin, helping Chicago becoming haulers of grain and livestock and a centre of meatpacking industries. Railroad lines stemming from Chicago transported the processed grain and meat eastwards.
