Which inventions are evidence of the influence of technology on American's life in the 1920's? Select all correct answers.
→ telegraph
→ television
→ radio
→ telephone

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Which inventions are evidence of the influence of technology on American's life in the 1920's?

→ telegraph

→ telephone

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answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44

necessary and proper clause. the congress shall have power to 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, or in any department or officer thereof.