How was central and southeast Asia transformed by European conquest?

Czarist Russia took over central Asia in the nineteenth century. Russia naturally extended its influence beyond its frontiers to block British expansionism in the area. Restless Russian officers were drawn to Central Asia to further their careers on the frontier.
Initially, Russia did not interfere too much in the large and diverse region of Central Asia. However, there were occasional and minor revolts.
Most of the eventual changes that were implemented were economic ones. The area provided raw materials and new markets for Russia. Moscow built an extensive railway network. Irrigation was improved, and slavery was suppressed.
The most serious threat to Russian domination was the Kazakh Revolt during World War I. More than a million peasants from European Russia had been moved into the area. Upset over the loss of grazing lands, the natives revolted.
After the collapse of Czarist Russia after WWI, the new Soviet government took over the region. Worried about the dual threats of Pan-Turkism and Pan-Islamism, Moscow divided the region into five separate republics within the USSR.
Much of Southeast Asia was taken over by France in the late nineteenth century. The French faced far more resistance in Vietnam than Russia had faced in Central Asia. French Indochina included modern-day Vietnam, Laos, and Cambodia.
The French were more ruthless than the Russians in maximizing the economic potential of their regions. France imposed heavy taxes on goods like salt and rice alcohol. The area's natural resources were exploited, too. Rice and rubber were grown for France's benefit. Also, only a small minority of Vietnamese became wealthy. Local peasants were ruthlessly exploited. A middle class never developed. Because they had been exploited, most Vietnamese never accepted the doctrine of capitalism. But many were receptive to national movements against French control.
By the mid-twentieth century, the French were ejected from Southeast Asia. World War II had demonstrated that the Europeans were not invincible, and the peoples of the region craved self determination.