Similarities are:
-lots of losses on both sides
-almost all of eurpe was affected
-fighting countries gained or lost colonies in other parts of the world
-many revolutions sparked before and after
-germany took to arms again
-big economic boom during the way
-usa profited be selling arms and weapons to both sides of the war
-austria-hungary empire separated in wwi
-germany split in two by wwii
-emotions during wwi sparked wwi
differences are:
-both fought for 2 totally different goals
-wwi was looking to gain control of trade routes of the sea
-wwii was a battle against the facist party
-wwi started as offense tactic by the germans
-wwii more of a border conflict or nation take over
-wwi poisionous gas, shells, tanks, aircraft
-wwii well built tanks, land and amphibious weapons, aircraft for bombing, ships with radar
-wwii helicoptor mostly used for medical missions
-wwi main conflict was problem or working together with allied forces
-wwii was fought with allied forces working together and containing forces without hesitation
i will make it look a lot more prettier when i type it tomorrow