This paper concerns optimal taxation and public goods in an economic federation with decentralized leadership, where one lower level government is first mover also in the horizontal dimension. Under plausible assumptions, horizontal leadership reinforces the incentives created by decentralized...

Today, many countries around the world respond to the global warming and its consequences with various policy instruments such as e.g. taxes, subsidies, emission permit trading, regulations and information campaigns. In the economic literature, policy instruments have typically been analyzed...