4: One of the key questions that Jared Diamond asks is Why does smallpox still exist today despite inoculation technologies? Why was the Columbian Exchange limited to plants and not animals? Why did the powerful states in Europe move from the Mediterranean to Northern Europe after the Columbian Exchange? Why did the world become so unequal in military technology over the last 10,000 years? 5: One of the keys to the development of settled communities was Isolation which protected inhabitants from plagues Finding locations near salt deposits which allowed both for the storage of food and regional trade The ability to store food year-round in structures that protected wheat, barely and other domesticated grains from insects, moisture and percolating water Finding locations near minerals such as tin and copper which allowed for the development of weapons to protect village inhabitants from roving hunters 6: The process of animal domestication Focused first on draft animals to aid in agriculture Focused first on large animals to aid in warfare Focused first on the horse which aided in both agriculture and warfare Involved controlling the feeding, movement and breeding of animals 7: According to Diamond, what gave Francisco Pizarro the enormous power to conquer the Inca Empire? All of these answers gave Pizarro key military advantages which allowed a small force of Europeans to defeat the Incas on both land and sea The domestication of horses and cattle gave Europeans the muscle power to increase agricultural productivity leading to more food, more people, more complex societies that eventually developed the military and organization technologies that were the basis of Pizarro's enormous power Europe had the Mediterranean Sea which fostered the development of sailing technologies and eventually navies. The Western Hemisphere had only the Gulf of Mexico which discouraged the development of naval power. Horses brought by the Spanish to Mexico brought with them diseases that spread to South America devastating the domesticated animals of the Inca Empire hampering their war capabilities 8: Diamond argues that Plants and animals could spread easily north to south and south to north across Eurasia Plants and animals could spread easily from east to west and west to east across Eurasia Plants and animals could spread easily north to south and south to north across the Americas Plants and animals could spread easily from east to west and west to east across the Americas 9; A key disease that influenced the outcome of Europeans coming to the Western Hemisphere was Heart disease Cancer Diabetes None of these diseases