What primarily set off large-scale migration flows among European countries during the twentieth century?

the ability to establish distinctive political structures
the familiar cultural traditions of the host countries
the motivation to reach quotas set by individual countries
the desire to reunite with family members who migrated previously
the removal of migration restrictions

Based on the graph, how is coal consumption likely to affect future generations? a. the higher our current rate of consumption, the less coal will be available in the future. b. current rates of consumption are irrelevant because new coal will form in the future. c. the lower our current rate of consumption, the more slowly coal will be replenished for the future. d. regardless of current rates of consumption, coal will always be available.

Which activity is an economic activity

Analyze the economic development during the twentieth century in sub-saharan africa, southeast asia, or the middle east.(pick one region)#one paragraph is all i need