1878 was the year doorknobs were created.
The Columbian Exchange was when the old world (Europe) trade with the new world (America) items. for example: Old World had horses. So if Europe never came to America... we wouldn't have them. Or new world had tomatoes. If Europe didn't have tomatoes... We wouldn't have pizza or delicious Italian goods.
Answer: With lower wages, more business-friendly corporate tax policies, government subsidies and less regulation, and a manufacturer, the goods could start rolling in...
Explanation: