Although no comparable preoccupation with freedom developed in any other part of the world, each region had its own experiences of it. This was true of Africa, but the difficult conditions of survival promoted a reliance on other values, such as courage, honor, and loyalty. The widespread presence of slavery, only rarely as harsh as in the West, and sometimes entered into voluntarily to ward off some crisis, impeded the diffusion of liberty as a value for society as a whole. Islamic society was pervaded by an egalitarian spirit based on the universal submission of everyone to God, but political rule was absolute once established, and only justice, not liberty, set limits to what rulers could do. Formally an empire, Mughal India displayed many forms of local independence, but those who exercised local authority regarded themselves as channels of sovereign power rather than as barriers to it. In China imperial authority was formally absolute but in practice people enjoyed much freedom of action, even against state officials. As in India, however, these limits on imperial authority were not conceived as liberties, chiefly because the state was regarded as essential to providing the moral order on which stable civilized life depended.