ABUJA, Nigeria — Weeks of flooding have killed 185 people in Nigeria and washed away homes and farmlands, the country’s disaster management agency said, further threatening food supplies, especially in the hard-hit northern region. The floods, blamed on poor infrastructure and badly maintained dams, have displaced 208,000 people in 28 of Nigeria’s 36 states, the National Emergency Management Agency said in an update Friday, triggering frantic efforts to evacuate hundreds of thousands to makeshift shelters. Nigeria records flooding every year mostly as a result of failure to follow environmental guidelines and inadequate infrastructure. The worst floods the country has seen in a decade were in 2022, when more than 600 people were killed and more than 1 million people were displaced. However, unlike in 2022 when the floods were blamed on heavier rainfall, the Nigerian Meteorological Agency predicted delayed or normal rains in most parts of the country this year and …