As no one was homeless and had all basic amenities, we can easily conclude that enough preparations were done in a well planned way to deal with natural as well as unusual adversities, if any. Diseases, infections were not known to them.
Now if we compare this to today's scenario; after so many years since independence, people are still homeless, glad to see finally our leaders have projected homes for every family till 2022. In summers we face scarcity of water and then our major cities drown in rainy season(what to say about usual's). Obviously we need to learn a lot from our past, our ancestors.