In the 21st century, however, the number of armed conflicts in Africa has steadily declined. For instance, the civil war in Angola came to an end in 2002 after nearly 30 years. This coincided with many countries abandoning communist-style command economies and opening up for market reforms. The improved stability and economic reforms have led to a great increase in foreign investment into many African nations, mainly from China, which has spurred quick economic growth in many countries, seemingly ending decades of stagnation and decline. Several African economies are among the world's fastest growing . A significant part of this growth, which is sometimes referred to as Africa Rising, can also be attributed to the facilitated diffusion of information technologies and specifically the mobile telephone. Migration from African nations has increased dramatically in the last decade.