Answer:
its b
Explanation:
all they wanted was the union
Harriet Tubman helped the union army because she had inside information.
Culture is the social behavior and norms of a certain group of people. This can include what they wear, their language, any traditions, the way they dance, etc. An example of this could simply be the USA and Australia. There are cultural differences between the two countries.
C. Magnetosphere is the answer.