translate English to French: Frontier Thesis The Frontier thesis was formulated 1893, when American historian Frederick Jackson Turner theorized that the availability of unsettled land throughout much of American history was the most important factor determining national...
Frontière, thèse de la La thèse de la frontière est formulée en 1893 quand l'historien américain Frederick Jackson Turner élabore la théorie selon laquelle la disponibilité de terres non encore...