Words to Describe immigrations

How immigrations often is described ("________ immigrations")

• chinese
• arab
• distinct
• malay
• vast
• peaceful
• net
• various
• newer
• scandinavian
• annual
• century
• italian
• great
• semitic
• wholesale
• ethnic
• foreign
• fresh
• barbarian
• huge
• massive
• asian
• later
• continual
• prehistoric
• teutonic
• african
• northern
• further
• german
• muslim
• scale
• scythian
• past
• periodic
• illegal
• new
• periodical
• frequent
• older
• irish
• tribal
• alien
• european
• separate
• recent
• polynesian
• aryan
• earliest
• large
• numerous
• successive
• continuous
• selective
• voluntary
• racial
• early
• subsequent
• largest
• phoenician
• major
• extensive
• cushite
• earlier
• previous