What type of good is often provided by the government because it is hard to get people to voluntarily contribute their fair share of the expense?

Public goods

Explanation:

Public goods are often provided by the government because it is hard to get people to voluntarily contribute their fair share of the expense, they are goods or services that is often provided by the government and do not result in financial profit to anybody thus making individuals unwilling to partake in bearing the cost of such goods. Examples are street lights, flood control systems and national defense.

well it depends i think people around the world are coming around to gay marriage. but if you are talking abortion then wow, so much to talk about. such as men thinking they have the right to choose if women can, the fact there are health concerns if the women can't get one, and many more arguments to discuss. so i would definitely say abortion would be a much more interesting topic.