The most important result of the second industrial revolution was

depleting natural resources.
creating business empires.
turning the united states into a world economic power.
creating problems for labor, such as long hours.

turning the United States into a world economic power.

The Second Industrial Revolution occurred following the American Civil War until World War I.

The Second Industrial Revolution created major American industries putting the US on the economic global map. Steel and oil industries became the leading suppliers to the world in addition to many factories producing a host of manufactured and food goods. The ability to quickly industrialize made the US a primary hub of goods when World War I broke out.

the three roles stated in the dialogue develop the siblings' personalities.

lloyd's personality looks like a trademarketer

dana's personality is afraid from lloyd's behavior and the oldest sister is a decided person who tries to solve any conflict

well it definitly does because if you are seen as weak you will be seen as unimportant and they will walk all over you and the us is the most powerful military and the largest in the world

hope this