Sometimes death of there family or growing up around it. Also it could be how they were raised or just a act where there full of anger
When it came to the foreign policies, the United States were not really pleasant towards the rest of the world. Besides the somewhat imperialistic policies that they had displayed, they fought others in terms of economy and migration. There were numerous laws introduced that prevented people form foreign countries from immigrating which wasn't liked by the other countries, while high tariffs made sure that exporting goods to the US was very difficult which was also problematic for various foreign countries.
By convincing others to support the industry duh
Answer she most likely likes to read