Both of the wars were started by Germany in the 1900s. Also the wars did include pretty much the entire world. Some political historians see them as phases of the same war. The Treaty of Versailles that ended WWI created the conditions which led to WWII.
Mainly in the way that the Allies (France in particular) treated Germany after the first gave them (the Germans) a reason to try to reverse it.
The Second World War had finished by 1945.
nothing
WW1
ww in ww1 or 2 stands for world war
in world war 2 Germany attacked japan in hiroshima and nagasaki
world war 1
nothing
they were destroyed by the war.
1939-45
confict
The Second World War had finished by 1945.
Ww1
Germany
No
1939-1945
Life carried on.
nothing