Spatial Development of Russia and the USA in the 16-20th centuries as formation of the major unit of geopolitical constructs of modernity. Revista San Gregorio, [S. l.], v. 1, n. 37, 2020. Disponível em: http://revista.sangregorio.edu.ec/index.php/REVISTASANGREGORIO/article/view/1288. Acesso em: 28 dec. 2025.