some countries
Yes it is
The austro hungarians allied with germany.
France and England
There were over a hundred countries that were not part of World War I.
Italy and Germany.
Germany
england,france,holland,poland and scotland
Turkey, Germany, Austria-Hungary,
Canada, Great Britain, USA and France
World War I led to World War II in the fact that after the war, all the countries signed a Treaty called the Treaty of Versailles in which Germany had to give up some land, they had to demilitarize, they had to take full blame for the war, and pay reperations to the Allied countires. From this Germany wanted revenge on the Allied countries.
Britain France and Russia or USSR as it was know at the time