The system we now have is that the US dollar is the world’s reserve currency by virtue of the dominant size of the US economy, its share in global trade and the preponderant use of dollar in foreign trade and foreign exchange transactions.
The notion of a land bank, as opposed to a land trust, is that properties are brought in and moved out of a land bank’s portfolio rather than permanently preserved. Using this kind of mechanism, a community can gain control of low-value properties that may otherwise sit vacant and cause problems for the surrounding neighborhood.