One of the principal areas of concern and focus for management was the water supply. Water was of course one of the most important resources for a community. The sitting of settlements was influenced strongly by proximity to water. Whether coastal or inland, the commercial activities of most towns relied heavily on water transportation, and so the navigability of rivers or harbors had to be assured. Water contributed to the protection of the community, whether …showed first 75 words of 2087 total…

…showed last 75 words of 2087 total…pain, fever to 105 degrees, blinding headache, cough, and exhaustion. Patches of red on the abdomen. Symptoms can last for weeks. Complications include pneumonia, intestinal hemorrhage, and coma. Results: 10-20% mortality. Now time Today most of these problems are solved and some diseases, like plague, have been eliminated or can be treated. Now we have modern public utilities and sanitary facilities like running water, sewage systems, and waste processing plans. We have good medicine and hospitals.