How did the American economy change as the country moved from the Civil War era to the Gilded Age?

Question

A. Wages grew, the middle class grew, and a large portion of wealth was accumulated by industry leaders.
B. Wages declined, the middle class shrank, and most new wealth was accumulated by industry leaders.
C. Foreign tariffs increased, coal production shrank, and little wealth was accumulated by Americans.
D. Foreign tariffs decreased, coal production grew, and new wealth was equally shared by Americans.

Answer 1

A. Wages grew, the middle class grew, and a large portion of wealth was accumulated by industry leaders.