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