Beginning in the 1500s European nations conquered most of Southeast Asia to set up. They built ports and cities to export the regions for their own benefit.

The main motivations for European colonization of Southeast Asia were economic gain, the desire for new sources of raw materials, and the establishment of trading routes to access the lucrative markets of the East. The Dutch, Portuguese, Spanish, French, and British were among the major European powers that vied for control of the region.

One of the first European powers to establish a foothold in Southeast Asia was Portugal, who established trade routes and ports in present-day Indonesia, Malaysia, and the Philippines. The Dutch East India Company followed suit, establishing a presence in the region in the early 17th century, eventually taking control of most of present-day Indonesia.

The British also played a significant role in the colonization of Southeast Asia, with the establishment of British trading posts in present-day Malaysia, Singapore, and Burma. The French, meanwhile, focused their efforts on Vietnam, Laos, and Cambodia, establishing French Indochina in the 19th century.

These colonial powers exploited the region's resources, including spices, textiles, and precious metals, to fuel their economies and enrich themselves. They also imposed their languages, cultures, and administrative systems on the indigenous populations, leading to significant cultural and social changes in the region.

Overall, European colonization of Southeast Asia had a profound and lasting impact on the region, shaping its history, economy, and society in ways that continue to be felt today.