D, anything to do with another country is foreign policy
<span>Guglielmo Marconi's work was in radio signals, and one of his inventions was the radio telegraph (AKA wireless telegraph)</span>
A federal system is a system of government in which power is divided between a central Authority and constituent political units .
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Answer:
Increasing worker productivity.
Explanation:
Over the centuries, humans and animals were largely used as a means to generate power, execute tasks or do certain things during the production and distribution process.
However, in the advent of industrialization and technological advancement, machines were invented to replace human and animal power.
Some examples of such inanimate sources are Steam plants, Nuclear plants, Wind etc.
During the Industrial Revolution, new technology affected the economy of the United States by increasing worker productivity. Factory workers weren't exclusively subjected to manual labor rather, they had the advantage and opportunity to use automatic machinery or equipment. These helped to make the workers perform their jobs effectively and efficiently and as such increasing the level of goods and services produced.
