History of Education and Covid-19: The crisis of the school according to african (Akanbi, Chisholm), american (Boto, Civera, Cunha, Bennett-Kinne, Rocha, Romano, Rousmaniere, Southwell, Souza, Taborda, Veiga, Vidal) and european (Depaepe, Escolano Benito, Magalhães, Nóvoa) researchers