Answer:
Biological warfare.
Explanation:
Mongol Empire used biological warfare method (black plague) to kill humans in the Crimean peninsula. Mongol troops threw plague victims into the city, thus contaminating the inhabitants. The Mongols were the first to use germ warfare. The Mongol army threw infected bodies into the attacked Crimean city of Caffa, and that led some of the survivors to flee and spread epidemic from Caffa to the Mediterranean Basin.
Disdain and mistrust of the Catholic Church were the major cause of the Protestant Reformation.<span> Reformers particularly decried the selling of indulgences and offering of forgiveness for sins in exchange for money; the practice of selling religious positions in the church was also frowned upon by those who sought to reform the church.</span>
With these services, people had an easy access to transportation and communication with other areas.
<u>Explanation:</u>
Henry Morrison Flagler made great efforts to extend the rail road services during the time period of 1800s. With the efforts made in this area, there was an easy access to transportation for the people and helped them to move from one place to another. This also came as an advantage for the businesses to move goods to the market. It also helped to increase the tourism in that time.
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