What has affected the economy and natural environment of some communities in California? A: Drought
A: Flooding
B: Hurricanes
D: Volcanoes

I think it is B hurricanes

The  pan-african movement  was an "emotional, cultural, psychological and ideological  movement  that began among the  african  dispora in the western hemisphere, for a closer  purpose, so that  african  people could feel secure, attain political, economic as well as psychological power visa vis other races or world regions" .