Proposes that all people seek to satisfy five basic kinds of needs: physiological needs, safety needs, belongingness needs, esteem needs, and self-actualization needs.

Abraham Maslow's hierarchy of needs theory.

Explanation:

Abraham Maslow's hierarchy of needs is one of the most influential theories of motivation that describes that actions of an individual are motivated by certain needs and these needs are arranged in a hierarchical pyramid. This theory emphasized that humans tend to motivated to fulfill basic needs before targeting to the next level (more complex needs) of the pyramid. For example, people tend to focus on physiologic before targeting safety needs.

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industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.