Which characteristic defines Qatar as having the highest GDP in the world?

The defining characteristic that positions Qatar as having the highest GDP in the world is its abundant natural resources, particularly its vast reserves of oil and natural gas. These resources have enabled the country to generate substantial revenue, leading to a high GDP per capita. The extraction and exportation of hydrocarbons have been the cornerstone of Qatar's economy, driving significant economic growth and foreign investment.

While the tourism industry, technological advancements, and the banking sector contribute to the economy, they do not compare to the impact of natural resources on Qatar's overall wealth and economic standing. The country’s strategic use of its natural resources has allowed it to invest in infrastructure, education, and health, further enhancing its economic profile. Thus, natural resources are the primary factor that defines Qatar's exceptional GDP ranking globally.