Cleanliness is very important in life because it is associated with progress.
A clean and a healthy environment would definitely contribute to the absolute national development.
when healthy people are there hygienic rate would be very high and people will be energetic to work and contribute to their motherland.
Health of the people living in an unhealthy country will be seriously  affected. 
Being clean is a sign of spiritual purity or goodness, cleanliness is next to godliness