Nigeria will lose 1 3tn ecowaseu economic pact man

I think there may be a small mistake in your statement. Nigeria will not lose 1 3tn ECOWAS economic pact man. I'm assuming you meant to say that Nigeria will lose a significant amount of revenue or economic benefits as a result of not being part of a certain economic pact or agreement within the Economic Community of West African States (ECOWAS).

Could you please clarify or provide more context about the specific economic pact or agreement you are referring to? I'd be happy to help you understand the implications of Nigeria's potential loss.