What primarily set off large-scale migration flows among European countries during the twentieth century? A. the ability to establish distinctive political structures
B. the familiar cultural traditions of the host countries
C. the motivation to reach quotas set by individual countries
D. the desire to reunite with family members who migrated previously
E. the removal of migration restrictions

Exactly what kind of weather conditions would a cold front produce?

Which statement best explains distribution of natural resources? people tend to settle in locations that have the resources they need for survival. some countries have resources that others lack, so trade between countries becomes vital. fossil fuels come from areas that have mountains and other areas that manufacture synthetic gas. areas with natural resources provide a higher standard of living and better quality of life.

If scientists only detect p waves in a certain layer of earths interior what does that tell us?