In the 19th century, climate and resources shaped regional economies. Which pairing is correct?

• A. Northeast: industry; Midwest: agriculture; South: plantation slavery; West: mining and land settlement.
• B. Northeast: agriculture; Midwest: mining; South: industry; West: technology.
• C. Northeast: mining; Midwest: fishing; South: commerce; West: agriculture.
• D. Northeast: agriculture; Midwest: industry; South: mining; West: plantations.

Answer: (A)