Universality of such movements--The name Historical Movement--Its
evolution--Its importance in history--Geographical interpretation of
historical movement--Mobility of primitive peoples--Civilization and
mobility--Migration and ethnic mingling--Cultural modification during
migration--The transit land--War as form of historical
movement--Slavery--Military colonies--Withdrawal and flight--Natural
regions of asylum--Emigration and colonization--Commerce as a form of
historical movement--Movements due to religion--Historical movement and
race distribution--Zonal distribution--Movements to like or better
geographic conditions--Their direction--Return movements--Regions of
attraction and repulsion--Psychical influences in certain movements--Two
results of historical movement--Differentiation and
area--Differentiation and isolation--Geographic conditions of
heterogeneity and homogeneity--Assimilation--Elimination of unfit
variants through historical movement--Geographical origins.