Here's a list of the "M" countries for my OFEC collection.
Madeira Islands
Madras Presidency
Madura Island
Magdalen Island
Magdalena
Majorca
Malacca
Malay Peninsula
Maler Kotla
Maluka
Manchurian Provinces
Manipur
Maracaibo
Maranhao
Marchena
Margarita
Mato Grosso
Menangkabau
Mendoza
Meng Chiang
Menorca
Mesopotamia
Mexico, Estado De
Mexico-Revolutionary
Min-Che-Kan Soviet
Minas Gerais
Moldavia & Wallachia
Mombasa
Mongolia
Montenegro
Montserrat
Morelos
Morioka
Mughal - Independent Kingdoms
Mughal Empires
Mutawakkilite Kingdom
Thanks very much for looking,