What is the main advantage of iron ore that was capitalized upon during the
Industrial Revolution?
A. It is the natural resource used to make steel.
B. It burns clean to produce energy.
C. It is an ideal metal for making jewelry.
D. It has a lightweight property which makes it easy to
transport.

labor leaders and organizations had the power to demand it.

explanation:

workers got a five-day workweek because the bcea protects and respect the rights of the employees. labor leaders and other groups demanded it.

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.