Periodic droughts and subsequent famines often led to war. The town experienced several natural calamities like floods, famines and epidemics. These famines cause widespread malnutrition and impoverishment. In the past, droughts have periodically led to major Indian famines. Fewer famines and epidemics allowed cities to grow and commerce to boom. The rebellions broke out because of these famines. There will be famines and earthquakes in various places. Swarms have devastated crops and been a contributory cause of famines and human migrations. The king ignored the famines and crises of the nation. This resulted in sugarcane monoculture, which often resulted in severe famines. They later merged with members of other Algonquin tribes displaced by wars and famines. Famines resulting in significant mortality are frequent. Famines and diseases killed millions each time. The 1590s saw the worst famines in centuries across all of Europe. To provide against possible famines, granaries were ordered built throughout the empire.