it elaborated further on sdg to make cities and human settlements inclusive safe resilient and sustainable unplanned urbanization is causing cities to choke with congested traffic and air pollution basic services like water and sanitation are not reaching citizens particularly the poor joblessness crime conflict and social strife are major problems including in socalled developed countries and natural disasters are becoming more destructive as people concentrate in dense areas the relevance of cities in economic terms is absolutely remarkable considering they occupy only between of the worlds available landmass