This week in The Economist there is a great piece about extreme poverty reduction in the developing world.  In the last 20 years, around a billion people have been lifted out of the most extreme poverty – defined globally as living on less than $1.25 a day.  ONE BILLION PEOPLE.  That still leaves way too many – about another billion – with not even enough to meet even their most basic needs for food, but it’s a huge achievement.

So how did that happen?  The evidence is clear.

Most of the credit, however, must go to capitalism and free trade, for they enable economies to grow—and it was growth, principally, that has eased destitution.

Poverty rates started to collapse towards the end of the 20th century largely because developing-country growth accelerated, from an average annual rate of 4.3% in 1960-2000 to 6% in 2000-10. Around two-thirds of poverty reduction within a country comes from growth. Greater equality also helps, contributing the other third. A 1% increase in incomes in the most unequal countries produces a mere 0.6% reduction in poverty; in the most equal countries, it yields a 4.3% cut.

China (which has never shown any interest in MDGs) is responsible for three-quarters of the achievement. Its economy has been growing so fast that, even though inequality is rising fast, extreme poverty is disappearing. China pulled 680m people out of misery in 1981-2010, and reduced its extreme-poverty rate from 84% in 1980 to 10% now.

…But the biggest poverty-reduction measure of all is liberalising markets to let poor people get richer. That means freeing trade between countries (Africa is still cruelly punished by tariffs) and within them (China’s real great leap forward occurred because it allowed private business to grow). Both India and Africa are crowded with monopolies and restrictive practices.

Many Westerners have reacted to recession by seeking to constrain markets and roll globalisation back in their own countries, and they want to export these ideas to the developing world, too. It does not need such advice. It is doing quite nicely, largely thanks to the same economic principles that helped the developed world grow rich and could pull the poorest of the poor out of destitution.