3. Protective tariffs (see above, [648]-[649]).
4. Development of industry previous to the Civil War ([295]-[307]).
5. Great progress of industry after the war ([401]-[406]).
6. Rise and growth of trusts and combinations ([406]-[412], [472]-[474]).
III. Commerce and transportation.
1. Extent of colonial trade and commerce ([32]-[35]).
2. British regulation ([69]-[70]).
3. Effects of the Revolution and the Constitution ([139]-[140], [154]).