B.
They originally came from the same region.
Causes:
nationalism
alliances (I think this is the biggest cause)
the assassination of archduke Franz Ferdinand.
I think that alliances were the biggest cause if world war 1. this is because the original dispute was only between two countries and because of the alliances the other more powerful countries had to step in. For example, the triple alliance and the triple entente were the two main alliances in ww1. Because the alliances were made up of lots of countries, they all got dragged into the dispute, causing a much bigger war than there needed to be.
so yeah idk rlly, hope this helps :)
A. The president fills the roles of head of state and head of government.
The Queen's role in politics is very small, as Britain has turned into a representative democracy.
The constitution declared the independence of the 13 colonies from Great Britain and explained the transgressions placed against them by King George the third
I believe the answer would be B.
