The olmec people

a) constructed giant stone monuments.
b) built pyramids out of blocks of stone.
c) developed a writing system with pictographs.
d) created a system of numbers that included zero.

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.

result of the incas claiming exclusive right over numerous traditional routes, some of which had been constructed centuries earlier mostly by the wari empire