THE ANGLOSPHERIC DIFFERENCE:

Population: Some Boom, Some Decline: Wildly varying fertility rates among nations threaten global stability (Joseph Chamie, 18 March 2009, YaleGlobal)

India alone accounts for 21 percent of global population growth, followed by China, which contributes 11 percent. As a consequence, India’s population is expected to exceed China’s in about 20 years. [...]

In contrast, among the more developed regions, little demographic growth is taking place. Many European countries and Japan are entering a period of population decline, and these trends are likely to continue. In contrast, Australia, Canada, New Zealand and the US are projected to continue growing due to relatively higher fertility and international migration.