Marshal Andrés de Santa Cruz promoted a project to reunite the two territories on the basis of a confederacy. The Peru–Bolivian Confederation was a plan that attempted to reunite the "Alto Perú" ("Upper Peru", now Bolivia) and "Bajo Perú" ("Lower Peru", now simply Peru) into a single political and economic entity. This integration was based not only on historical, cultural and ethnic reasons, but also on economic motives. The union was attempting to restore the ancient commercial routes and promote a policy of open markets.