To hear certain kinds of cases
Answer:
D. His improvements allowed the steam engine to run more efficiently on oil instead of coal.
First question: D- people who were living in America at the time, didn't want other people to come in and "steal their jobs". To me, nativism (at the time) was a pretty stupid thing, considering how many of the people who didn't want anyone else coming into the country, were immigrants themselves.
Second question: D is the closest answer, seeing as Roosevelt wanted to improve relations with Central and South America.
Hope this helps!
This historian would be using the skill of "comparative analysis," since he or she is comparing a wide variety of sources to draw a conclusion between them as a group.
It's Institutional <span> racism</span>
