Final answer:
Many U.S. companies have reduced the number of hierarchical levels to improve decision-making, communication, and organizational agility.
Step-by-step explanation:
During the past few years, many U.S. companies have reduced the number of hierarchical levels in their organizations. This trend is part of a larger movement towards flattening organizational structures to streamline decision-making, improve communication, and increase flexibility in the face of rapidly changing market conditions. By reducing the number of layers, companies hope to foster a more responsive and agile environment that can better adapt to new challenges and opportunities.