Long distance travel and military. I'm not fully sure though.
During the Gilded age, society experienced a period where there are so many social issues exist around them, but it was clouded/masked by silver lining (massive economic growth for society but it only enjoyed by a select view followed by massive exploitation toward a certain group)
During the reconstruction Our society realized this defect and started to made several changes
A tariff is a tax imposed on products and services; this is used to control trade and one of its major disadvantages is that they rise the prices of imports giving way to a decrease in consumer surplus. What´s more, a tariff discourage competition making local industries less efficient, leading to decreases in product quality. Moreover, high tariffs may result in trade wars between nations due to the fact, exporting countries counter with their own tariffs on imported products.
Greta thunberg addressed the issue of climate change