Akwụkwọ a na akọwa echiche mgbanwe ọhụrụ maka ebe mmakọ ewumewu obibi na gburugburu ụwa (ngwa) nwere mgbakọta nke ọrịre ahịa enwere ike ịnwetanwu (Ijeri Dollar), nke a na agwakọta na ngwanrọ ndị nnọchite ewumewu obibi gụnyere nnyocha ewumewu obibi (Ọrịre Trillion Dollar dị ike ịmepụta).
