Plz need
all of the following were long term causes of world war i except
a) colonial disputes.
b) religious differences.
c) the drive for naval superiority.
d) ethnic tensions within the austria empire.

Ineed asap! ! what is the name of the system in which each branch of the u.s government can limit the actions of the other branches? a. perpetual union b. division of powers c. cooperative federalism d. checks and balances