Collective action problems that governments help solve

Briefly identify and describe two different collective action problems that governments help solve, and provide a specific example for each. Why do societies face this kind of collective action problem? How was government able to help resolve each specific problem (both generally and in your example)? Do you believe government’s use of power to resolve this problem of collection was justified and beneficial? Why or why not? (You are welcome to discussion collective action in the government's COVID-19 response, environmental policy-making, national defense, or any other contemporary or historic issue area.)