Write SQL queries to answer interesting questions about international debt using data from The World Bank
1. The World Bank's international debt data
2. Finding the number of distinct countries
3. Finding out the distinct debt indicators
4. Totaling the amount of debt owed by the countries
5. Country with the highest debt
6. Average amount of debt across indicators
7. The highest amount of principal repayments
8. The most common debt indicator
9. Other viable debt issues and conclusion