MatÃas BraunRicardo HausmannLant Pritchett2026-03-222026-03-22200210.2139/ssrn.3298943https://doi.org/10.2139/ssrn.3298943https://andeanlibrary.org/handle/123456789/59334Citaciones: 8enPolitical scienceThe Proliferation of Sovereigns: Are There Lessons for Integration?article