What are several achievements for each of the following civilizations: -olmec: -zapotec: -chavin: -nazca:

use the internet it helps alot

the use of email to replace slower surface mail.

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.