What are the effectiveness of the tittle stolen rivers?

I think it's because they Africans were being robbed of their natural recourses so it is symbolic ever though you can't really steal a river I'm sorry if that doesn't make sense I hope it helped

Push and pull factors encouraged migration the push factor were things that pushed the immigrants away from their country like lack of jobs or political persecution
pull factors were things that drew the immigrants to another country aka the united states. immigrants came to the us because they wanted freedom  and  better jobs.