Pedzisa mutsara unotevera: Ronald Robinson naJohn Andrew Gallagher vose vari vaviri vakashanda paYunivhesiti yeCambridge. Basa ravo rakadenha "tsananguro dzechinyakare" dzoudzvinyiriri uye kuwedzera kweBritain. Vaviri vacho vakabudisa "The Imperialism of Free Trade" muna 1953, rondedzero yaitaura kuti paiva nechisungo chakafanana pakati peumambo hweBritain muzana rose ramakore rechi19. Bhuku racho rakabudiswa nguva pfupi pashure, rakanyorwa mumamiriro ezvinhu e
Dambudziko reSuez ra1956.