This document discusses different types of human migration. It defines internal migration as movement within a country's borders, and international migration as movement across country borders. It notes that migration can be forced, such as from disasters or war, or voluntary due to perceived opportunities. Push factors driving migration include lack of jobs, poverty, and environmental disasters, while pull factors attracting migrants include economic opportunity, higher standards of living, and religious tolerance. The document provides examples of images showing different causes and types of migration, such as families moving for jobs, refugees fleeing violence, and migration due to environmental or economic conditions.