when did the world population reach 5.9 billion
World population It is estimated that the world population reached one billion for the first time in 1804. It was another 123 years before it reached two billion in 1927, but it took only 33 years to reach three billion in 1960.[69] Thereafter, the global population reached four billion in 1974, five billion in 1987, six billion in 1999 and, according to the United States Census Bureau, seven billion in March 2012.[70] The United Nations, however, estimated that the world population reached seven billion in October 2011.[71][72][73]
World population There is no estimation for the exact day or month the world's population surpassed one or two billion. The points at which it reached three and four billion were not officially noted, but the International Database of the United States Census Bureau placed them in July 1959 and April 1974 respectively. The United Nations did determine, and commemorate, the "Day of 5 Billion" on July 11, 1987, and the "Day of 6 Billion" on October 12, 1999. The Population Division of the United Nations declared the "Day of 7 Billion" to be October 31, 2011.[79]
World population In demographics, the world population is the total number of humans currently living, and was estimated to have reached 7.6 billion as of March 2018.[1]
Economic nationalism While the coining of the term "