He probably changed the perception of the Spanish because Vespucci's findings during the Age of Discovery led Spain people to believe that North and South America were not connected to Asia, which was a common belief at the time and was even held by Vespucci himself.
The reason for the deficit can be boiled down to the United States as a whole spending more money than it makes, which results in a current account deficit.
The type of Optical Fiber that is used normally to connect two buildings that are apart by several kilometers is called the Single-Mode Optical Fiber.
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What is a Single-Mode Optical Fiber
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In the field of fiber optic communication, the single-mode optical fiber (SMF) which is also known as the fundamental or mono-mode optical fiber is one that is designed with the ability to carry and transport only a single mode of light.
Learn more about types of Optical Fibers in the link below:
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