How has the distribution of revenues between the Union and the States evolved over time?
The context provided discusses the establishment of Contingency Funds in India for both the central government and state governments. It also mentions a specific distribution of revenues between the Union (central) and States, but this is only related to certain stamp duties mentioned in the Union List.

The evolution of the distribution of revenues between the Union and the States over time can be observed through various constitutional amendments and legislative changes. These changes have aimed at better allocating financial resources for the development of both central and state governments while ensuring a balance between their respective responsibilities and roles.