The correct answer is the Civil Rights Act
Although many provisions of the civil rights act and similar acts that followed ban all abuse of constitutional rights by officers who separate their detainees based on color, it is a problem that still haunts the US. Things like racial profiling are still a thing and even though they are banned by the civil rights act it still happens from time to time.
B is the answer in my opinion
Drive for power and wealth for the homeland.
Since I don't know the context of this question, I'll answer it the way a scientist would.
We know that Einstein was a scientist. Scientists are always asking questions and creating tests to solve problems. Einstein most likely didn't view his achievements as the answer to the problems of the universe. He probably saw a lot of flaws in his work. Even if he didn't, a true scientist is always questioning things. The definition of a scientific law is a theory that has never been proven false. He probably wanted to know if his achievements were theories or if they were laws.
These are just a few ideas. Take a minute to think about the context of the question and what you think that the answer should be based on that.
Answer: Missions were built to establish Spanish land claims.
Explanation: