Mexico's northern and western regions have the highest percentages of European population, with the majority of the people not having native admixture or being of predominantly European ancestry, resembling in aspect that of northern Spaniards. In the north and west of Mexico, the indigenous tribes were substantially smaller than those found in central and southern Mexico, and also much less organized, thus they remained isolated from the rest of the population or even in some cases were hostile towards Mexican colonists. The northeast region, in which the indigenous population was eliminated by early European settlers, became the region with the highest proportion of whites during the Spanish colonial period. However, recent immigrants from southern Mexico have been changing, to some degree, its demographic trends.