Independence was unilaterally declared on 24 September 1973 or, which is now celebrated as the country's Independence Day, a public holiday. Recognition became universal following 25 April 1974 socialist-inspired military coup in Portugal, which overthrew Lisbon's Estado Novo regime. Nicolae Ceaușescu's Romania was the first country to formally recognise Guinea-Bissau and the first to sign agreements with the African Party for the Independence of Guinea and Cape Verde.