<human>:  When did the Third World food crisis start?
<bot>: The Third World food crisis began in the 1970s and 1980s. The world’s population has grown significantly since then, and the world’s food supply has not kept up with this growth. There are many factors that contributed to the food crisis, but the main cause is that there is not enough land to grow enough food to feed the world’s growing population. The world needs to find ways to grow more food in order to feed the world’s growing population.