Trier union (or Alies): Germany, France, Spain, Sweden, Denmark, Albania and the Czech Republic (later joined the United States, Mexico and most American countries) Pact of Chamberlain: Britain (as well as the dominions and colonies), Portugal, Greece, Belgium, Netherlands (later joined Russia and her allies- Serbia and Romania) Italy and Switzerland remain neutral (in Italy are strong leftist, and Switzerland has traditionally neutral country). Also (yet) keep the neutrality of the Eastern European countries