Lewis Henry Morgan (1818–1881), a lawyer from Rochester, New York, became an advocate for and ethnological scholar of the Iroquois. His comparative analyses of religion, government, material culture, and especially kinship patterns proved to be influential contributions to the field of anthropology. Like other scholars of his day (such as Edward Tylor), Morgan argued that human societies could be classified into categories of cultural evolution on a scale of progression that ranged from "savagery", to "barbarism", to "civilization". He focused on understanding how cultures integrated and systematized, and how the various features of one culture indicate an evolutionary status in comparison with other cultures. Generally, Morgan used technology (such as bowmaking or pottery) as an indicator of position on this scale.