What of the following resources have been the main contributors to Russia’s wealth in recent years
1. Oil and natural gas: Russia is one of the world's leading producers and exporters of oil and natural gas. These resources have been a major source of revenue for the country, particularly as global energy prices have risen in recent years.
2. Metals and minerals: Russia also has significant reserves of metals and minerals, including gold, nickel, and copper. The extraction and export of these resources have helped to boost Russia's economy.
3. Agricultural products: Russia is one of the world's largest producers of wheat, barley, and other grains. The export of these agricultural products has been a key source of income for the country.
4. Arms exports: Russia is one of the world's largest exporters of arms and military equipment. Sales of weapons to countries around the world have generated significant revenue for the Russian government and defense industry.
5. Technology and innovation: Russia has a strong tradition of scientific research and technological innovation. Industries such as aerospace, nuclear energy, and information technology have been important drivers of economic growth in recent years.
Overall, oil and natural gas have been the primary contributors to Russia's wealth in recent years, but the country also benefits from a diverse range of other resources and industries.