How did economic success in parts of California and the U. S. Northeast cause some people to migrate away from these areas?

A. (they migrated to industrial cities to pursue economic advancemet.)

Explanation:

American Exodus: The Dust Bowl Migration and Okie Culture in California (New ... it the eighth largest economy in the world; larger than People's Republic of China, ... For nearly a century and a half the state has sustained a growth rate that ... are never far from consciousness and more readily than in other regions suggest ...

Explanation:

the answer is:

c. economic output

acts of terrorism occur globally. the united nations global counter-terrorism strategy was created in order to build adequate systems of support and solidarity with victims of terrorism. here´s a summary of the proposed key themes: the importance of giving victims a face and a voice; protecting their dignity; giving victims legal status and defending their legal rights; providing victims with medical, psycho-social and financial support; building solidarity with victims; improving media coverage of victims; and focusing on the link between victims and counter-terrorism efforts more generally.