World population declining; Overpopulation is one of the great challenges facing humanity. Since the 1950s, mainly due to medical advances

Most populous country India; By mid-April, the forecast is for India to overtake China as the world's most country.

Most populous country; Taiwan Chinese Region News Briefing, India's population surpassed China to become the most populous country

India is the second largest country in the world after China. Many cities of India also leave behind many countries in terms of population.