Hasta la primera mitad del siglo XX, la Amazonía, por mucho tiempo tierra incógnita, siguió siendo un espacio difícil de explorar y delimitar. Provistos de inmensos recursos naturales, y a causa de los problemas que implicaban en términos de soberanía y de desarrollo económico, sus confines fronterizos se encontraron en el meollo de las tensiones entre Estados limítrofes. La historiografía peruanista suele considerar que las fronteras “modernas” del Perú son las del presidente Augusto B. Leguía (1908-1912 y 1919-1930). Sin embargo, hasta el presente, la historia del proceso de trazado de la frontera en los márgenes amazónicos del territorio peruano quedó descuidada por los investigadores. Al estudiar los informes de la Comisión mixta peruano-colombiana encargada de trazar la frontera en el Putumayo en pos de la ratificación del tratado Salomón-Lozano (1928), este artículo revela el entrevero de lógicas políticas y científicas que sustentaron la apropiación de sus territorios fronterizos por el Estado peruano.
(probably anachronistic) projections of political ideology onto movements whose core values remained often vague and usually rather flexible. As a historian of the Mexican Left, it has pushed me to think much more deeply about what 'the Left' or 'Lefts' might constitute in such circumstances: ideologically-heterodox coalitions were (re)forming around specific issues or eventscentre-periphery relations, succession mechanisms, re-election, trade with the United Stateswhich are not, prima facie, mapped easily onto a Left-Right spectrum. This is a clear, cogent and innovative contribution to the history of postrevolutionary Mexico, offering a plausible, well-evidenced account of how the ruling party eventually came into being, but also reminding us of the many paths not taken in that crucial period of state formation. It is a compelling read with important, frustrating andin many casestragic sub-narratives; highly recommended.
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