I think it's D. hopefully this helps
1) Oil prices and economic inefficiency.
Yamani, declared that Saudi Arabia was quitting the agreement on oil production restraint, and started to boost its share in the oil market. After this, Saudi Arabia increased oil production by 5.5 fold, and oil prices dropped by 6.1 fold,
2) ethnic tensions
3) Gorbachev’s reforms
<u>Three lessons learned from the Great depression are as follows:</u>
- A thing can be reused repeatedly.
- One should trained himself in various ways.
- Be friendly with everyone.
<u>Explanation:</u>
Great depression gave a great lessons to everyone. Out of all the lessons three majors are:
1. We should use a thing in various ways so that its utility can reach in its highest point. Do not throw or reject a thing after one time use. Reuse, recycle should be followed.
2. There is no job security in the world. So be trained and expert in every skill of life. So you can not sit idle even at tough times.
3. Keep good relation with your neighbor and friends. Stretch your helping hand towards them in their need.
Answer:
O Life-Saving medicines
Explanation:
he made some amazing things for those with disabilities
