The Mexican Frontier, 1821–1846 published by other historians. This work was supplemented by additional primary materials which he discovered in the archives that allowed him to delve further into certain areas. "The Mexican Frontier" examines the southwestern United States, specifically the areas now known as Arizona, California, New Mexico, and Texas, in the twenty-five years between Mexico's independence from Spain and the beginning of the Mexican–American War. This resulted in the transfer of control of the border areas to the United States. In the early days of the Republic of Mexico, these areas comprised its northern border, including the territories of Alta California and
No independence before majority rule No independence before majority rule No independence before majority rule (abbreviated NIBMAR) was a policy adopted by the United Kingdom requiring the implementation of majority rule in a colony, rather than rule by the white colonial minority, before the empire granted its colony independence. It was sometimes reinterpreted as no independence before majority African rule. In particular, this position was advocated with respect to the future status of Rhodesia as an independent state. British prime minister Harold Wilson was pressured into adopting the approach during a conference in London. Wilson was not initially inclined to do so, fearing it would