that more attention was paid to the smaller spill in the Gulf of Mexico/America than to the bigger pollution issue/spill in West Africa / that Africa is wondering why Americans are so concerned over a much smaller issue / that the spills in West Africa are a much bigger problem than the BP oil spill in the US;
America's eyebrows/expression suggest Western society/America is shocked/concerned/screaming at pollution nearby, when there are much greater concerns further away/in LEDCs;
Africa's eyes/expression suggest they may be more resigned/undisturbed by their pollution (perhaps because of more pressing issues of survival);
Africa is wondering why such attention is not paid to their pollution issue too;
The question mark may suggest Africa/everyone is relatively unaware of the pollution in Africa / there is no easy solution to the issue;