'''Migration''' is the field of [[demography]] that studies the causes, patterns, and consequences of large-scale permanent change in residence. The basic tools are statistical analysis of census data and surveys. It is a major topic in historical demography, which traces the large-scale movement of populations over time and space. '''Migration''' is the process of moving out, while '''immigration''' is the process of moving in. | '''Migration''' is the field of [[demography]] that studies the causes, patterns, and consequences of large-scale permanent change in residence. The basic tools are statistical analysis of census data and surveys. It is a major topic in historical demography, which traces the large-scale movement of populations over time and space. '''Migration''' is the process of moving out, while '''immigration''' is the process of moving in. |