The Berlin Conference was conducted in order to a. organize a strategy to unite Algeria & the Congo.
b. encourage industrialism in Sub-Saharan Africa.
c. divide Africa among European imperialist nations.
d. restore the balance of power in Europe.

Triebe extended to kin-groups / ethnic groups. and in united states, it mostly refers to the native indians.in united states, the term tribe is used to define social group that exist befor the establishment of the government.in the past, the native indians and the government clashed in several conflicts to fight for lands and until now, the government still give various form of grants for the natives  to subsidized the take land.