WHAT CAUSED WW1 ??

HELP PLZ AND THANK U

BRAINLIEST WILL BE GIVEN

There were many reasons but the main cause was the assassination of the then arch d.uke of Austria, Franz Ferdinand, by the Black Hand in 1914.

Hope it helps ⚜

pleas go answer my queston befor i fial my test

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )