Apositive effect of urbanization was the building of which public transportation systems?

Which statement about spreading knowledge of diseases and health around the world is correct?

Rational ignorance suggests that a. voters are ignorant on issues that are not of special interest to them b. voters do not pursue information about issues before voting c. low voter turnout is due to a lack of understanding of the platforms of each political party d. voters are uninterested in the electoral process

Why are people in history willing to fight in conflicts against a more powerful oppressor?