Historically, where were there high incidents of cholera?

Explanation:

A second cholera pandemic reached Russia (see Cholera Riots), Hungary (about 100,000 deaths) and Germany in 1831; it killed 130,000 people in Egypt that year.[12] In 1832 it reached London and the United Kingdom (where more than 55,000 people died)[13] and Paris. In London, the disease claimed 6,536 victims and came to be known as "King Cholera"; in Paris, 20,000 died (of a population of 650,000), and total deaths in France amounted to 100,000.[14] In 1833, a cholera epidemic killed many Pomo people which were a Native American tribe. The epidemic reached Quebec, Ontario, Nova Scotia[15] and New York in the same year, and the Pacific coast of North America by 1834. In the center of the country[clarification needed], it spread through the cities linked by the rivers and steamboat traffic.