It's B Both invested in developing roads throughout the Inca Empire.
The answer to this question is:
Atomic Bomb
Ethnicity is like your culture. Language, race, and religion all play into your background and culture. However, politics are something that govern the country you live in -- they're not necessarily connected to your background. Therefore, politics would be the correct answer.
When you put these questions up it would be smart to add the answer choices
Answer:i think it's through their wealth and place in society