China ceased its 15th-century naval explorations for all of the following reasons except
a) it decided to use its resources to revamp the grand canal

b) it felt the outside world had little to offer

c) it wished to copy the isolationist policy if its friend, japan

d) it needed its navy to protect against foreign pirates

after the roman empire, the catholic church began to unify by taking on many duties of a government.

the federal constitution of the united mexican states of 1824 was enacted on october 4 of 1824, after the overthrow of the mexican empire of agustin de iturbide. in the new constitution, the republic took the name of of united mexican states. it was replaced by the federal constitution of the united mexican states in 1857.