See the link below.
This is a list of countries in 1939. It lists all of the sovereign states, dependent territories, puppet regimes, and unrecognized states that existed during that year, and gives a short description of their level of sovereignty. Which makes it way too long to be entered here.
No
war
A lot !!!!
In 1900, there were 79 countries.
there are 105 countries in the world
There were 73 countries involved in World War II between 1939 and 1945.
No
war
war
9 countries *Austria (1938) *Czech Republic (1938 and 1939); Slovakia became German satellite in 1939. *Poland (1939) *Denmark (1940) *Norway (1940) *Luxembourg (1940) *Netherlands (1940) *Belgium (1940) *France (1940) Plus the Channel Islands
There are actually three countries between this time period:Austria (1938)Czechoslovakia (1938)Poland (1939)
u.s.s.r. and Germany
Because it involved so many countries in so many parts of the world. WW1 was 1914 to 1918. WW2 1939 to 1945
Germany and Italy
In September 1939, Germany and Slovakia invaded Poland. This lead to many countries declaring war.
There are many, but two obvious ones are England in 1754 - 1781 and Germany in 1870 - 1918 and 1939 - 1945
Nationalism was and still is in many different time periods particularly during WWII from 1939-1945 many dictators of Eupopean countries used nationalism to gain support from their people