Answer:
ola atodas me ayudan en unos trabajos que no se que aser
Advancments in technology
The death of archduke Francis Ferdinand of Hungary was the initial cause of ww1. However there was a build up to ww1. Countries had new powerful weapons and wanted to capitalise on this. The navy’s of many countries were being expanded. Political disagreements between countries led to increased tensions.
It is B. However, it soon becomes D by force.
~ThePirc