Question

By the mid-nineteenth century the "Old Northwest" was the leading supplier of: A. wheat, oats, corn, potatoes, and livestock B. ships, lumber, textiles, rum, and imported goods C. tobacco, cotton, sugar, and rice D. indigo, silk, spices, and herbs

Answer 1

By the mid-nineteenth century, the "Old Northwest" was the leading supplier of: A. wheat, oats, corn, potatoes, and livestock
The lands that located within the northwest region is very fertile and had a lot of nutrition which became the perfect medium to grow wheat, corns, and wild grass that can be utilized as foods for farming animals.

Answer 2

A. Because those were the most grown in the "old west". Ships were made on the coast mostly. Spices and herb trade was Asian imports, and cotton, sugar and rice were all from the south.