By instituting perestroika, Gorbachev attempted to : Gradually introduce privatizations.
He believed that it's the only way he could dismantle the huge communism mindset that the Russian had during that time.
I believe that the answer is Urea.
It is slowly growing, mostly due to immigration
Mao's policy of commune farming
<span>1959-1961 </span>
<span>The famine triggered by the "Great Leap Forward" was one of the largest man-made disasters in human history. Estimates of the number of casualties vary greatly and are difficult, if not impossible, to verify. Conservative estimates assume that from 1958 to 1961, over 14 million people died of starvation, and the number of reported births was about 23 million fewer than under normal conditions. Other authors have estimated the number of famine-related death of up to 30 million or higher
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