Which has led to greater competition among workers looking for jobs?

globalization

protectionism

specialization

unionization

Globalization

Explanation:

Globalization connects people from all over the world as a result of movement and acceptance of goods and services leading to global cultural, political and economic integration.

Globalization involves movement of people from one country to another. People move to countries where there are jobs and where there is a better standard of living such as urban areas and the developed countries which ultimately results in competition among workers looking for jobs

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.