after the nigerian-biafran war, many igbo people emigrated out of the indigenous igbo homeland in southeastern nigeria due to an absence of federal presence, lack of jobs, and poor infrastructure. in recent decades the igbo region of nigeria has suffered from frequent environmental damage mainly related to the oil industry. igbo people have moved to both nigerian cities such as lagos and abuja, and other countries such as gabon, canada, the united kingdom and the united states. prominent igbo communities outside africa include those of london in the united kingdom and houston, baltimore, chicago, detroit, seattle, atlanta and washington, d.c. in the united states.