Mezue ahịrịokwu na-esonụ: N'afọ 2015, Millennium Development Goals (MDGs) bịara na njedebe na usoro nke ịkọwapụta usoro mmepe mba ụwa iji dochie ha rụpụtara site na ịnakwere 2030 Agenda maka Sustainable Development, nke gụnyere usoro 17 Sustainable Development Goals. Ihe
A ga-enwekwa ọgbakọ mgbanwe ihu igwe nke United Nations COP21, nke ebumnuche ya bụ imezu nkwekọrịta zuru ụwa ọnụ banyere ihe gbasara ihu igwe, na ngwụcha afọ 2015.