What was one important feature that shaped the era of new imperialism but not the era of old imperialism? the age of enlightenment the industrial revolution overseas trade routes the discovery of the americas

I believe its the industrial revolution. The discovery of machines gave way to produce more products that did not only provided for the country but others as well. During that time the division and organized system of labor came together with more specialized skills in the work force. It opened more opportunities with new imperialism compared to the old one which is more based on agricultural products.