the regular and repeated way in which something happens or is done

• pattern
• process
• impact
• routes

an established or selected course of travel or action

• pattern
• process
• impact
• routes

to have a strong and often bad effect on (something or someone)

• pattern
• process
• impact
• routes

a series of actions that produce something or that lead to a particular result

• pattern
• process
• impact
• routes

A factor that leaves one with no choice but to leave one's current home (especially parental home), country, region, organization, or religion.

• environmental
• distribution
• pull factor
• push factor

the way that something is divided or spread out

• routes
• distribution
• environmental
• push factor

the conditions that surround someone or something : the conditions and influences that affect the growth, health, progress, etc., of someone or something

• environment
• push factor 
• pull factor
• migration

movement by people from one place to another with the intention of settling temporarily or permanently in the new location. The movement is typically over long distances and from one country to another

• pull factor
• push factor
• distribution
• migration

movement of people into another country or region to which they are not native in order to settle there, especially as permanent residents or future citizens.

• emigration
• migration
• immigration
• routes

the act of leaving one's country or region with the intent to settle permanently in another. It is the same as immigration but from the perspective of the country of origin. 

• emigration
• migration
• immigration
• routes