A track can be constituted-of-or-filled-with sustained development.
A sustained development of national economy may provide the economy of a world-city with support.
A sustained development can be constituted-of-or-filled-with agriculture.
Social progress can be on a basis of sustained development of the national economy.
A country may implement a strategy of sustained development.
Sustained development can be constituted-of-or-filled-with resources.
A sustained development can be constituted-of-or-filled-with visits.
A visit may promote a sustained development of bilateral relations.