Answer:The coal-fired steam engine was in many ways the key technology of the Industrial Revolution. Steam power was first used to pump water out of coal mines by Thomas Newcomen, who invented the first steam engine that truly worked in 1712. ... Watt had taken Newcomen's design and improved upon it.
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Italian campaign invasion of Italy in mainland
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Through interaction between traders and the locals along the trade routes.
Explanation
During their trades operation, a lot of interaction happened between the traders and the local people. During those interaction, they started to learn about each other's religion, culture, scientific development in their hometown , etc.
This is where the locals learn about the religion of the traders. After the traders left, the locals will spread the knowledge about that religion to other locals and contributed to the increasing amount of followers of that religion.
Over expansion weakened Rome because the military couldn't protect that much land from foreign invaders.
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She became mistress, guide, and interpreter to Hernán Cortés during his conquest of Mexico. The success of his ventures was often directly attributable to her services. Renouncing her indigenous name, Malintzin, on her conversion to Christianity, Doña Marina served her adopted countrymen with dedication
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