Peru–Bolivian Confederation confederation and Orbegoso maintained only the presidency of the newly created "Nor-Peruvian" state. 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. In Peru,
Peru the early 1900s. Internal struggles after the war were followed by a period of stability under the Civilista Party, which lasted until the onset of the authoritarian regime of Augusto B. Leguía. The Great Depression caused the downfall of Leguía, renewed political turmoil, and the emergence of the American Popular Revolutionary Alliance (APRA). The rivalry between this organization and a coalition of the elite and the military defined Peruvian politics for the following three decades. A final peace treaty in 1929, signed between Peru and Chile called the Treaty of Lima, returned Tacna to Peru. Between 1932 and 1933, Peru