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.
Answer:
Machu Picchu is a 15th-century Inca citadel located in the Eastern Cordillera of southern Peru. When the explorer Hiram Bingham III encountered Machu Picchu in 1911, he was looking for a different city, known as Vilcabamba. The big question is: how did it take so long to be discovered? The answer lies in the preventive measures the Incas took to avoid its discovery. The Incas left the site one hundred years after they made it in fear that the Spanish settlers would find it.
Explanation:
McCulloch v. Maryland (1819) is one of the first and most important Supreme Court cases on federal power. In this case, the Supreme Court held that Congress has implied powers derived from those listed in Article I, Section 8. The “Necessary and Proper” Clause gave Congress the power to establish a national bank.
Enlightenment thinkers encouraged the improvement of society through the "<span>(2) use of reason". This method of thinking had a great deal of influence on the American Revolution.</span>