What was a common cause of ethnic tension in Cambodia, Myanmar. And Sri Lanka?

Question

All included a majority group that got power and limited the rights of others
The Tamils gained power in all three countries and limited the right of others.
Ethnic tension for all three was a result of European colonialism
All included minority groups that seized power and limited the rights of others.

Answer 1

The most accurate statement regarding a common cause of ethnic tension in Cambodia, Myanmar, and Sri Lanka is:

All included a majority group that got power and limited the rights of others.

In each of these countries, the dominant ethnic groups—Khmer in Cambodia, Burmans in Myanmar, and Sinhalese in Sri Lanka—gained political power and, at various times, enacted policies that marginalized minority groups, leading to significant ethnic tensions and conflicts.

While colonial legacies and dynamics also played a role in shaping these tensions, the fundamental issue was the response of the majority groups to their political dominance and the treatment of minority populations.