Alexander Graham Bell invented the TELEPHONE in 1876. It is a device that lets two people have a conversation even when they are far from each other. This could be done by sending signals through cables. Alexander Graham Bell began a new era of communication with his invention of the telephone.
<span>Showed workers that organized labor was powerful.
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Showed them the power of organized labor
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The term that generally refers to the number of individuals or resources that one supervisor can manage effectively during an incident would be "<span>b. Span of control," although the effectiveness can vary significantly. </span>
