1. Economic stability: Developed countries generally have more stable economies, lower inflation rates, and lower political risks, leading to lower interest rates compared to developing countries.

2. Creditworthiness: Developed countries typically have higher credit ratings and are considered less risky for lenders, resulting in lower interest rates. Developing countries may have lower credit ratings, making it riskier for lenders and leading to higher interest rates.

3. Financial market infrastructure: Developed countries usually have more sophisticated financial systems and institutions, which can lead to lower interest rates. Developing countries may lack a robust financial infrastructure, resulting in higher interest rates.

4. Currency stability: Developed countries often have more stable currencies, which can lead to lower interest rates. Developing countries may have more volatile currencies, leading to higher interest rates to compensate for currency risks.

5. Level of government debt: Countries with high levels of government debt may face higher borrowing costs, resulting in higher interest rates. Developed countries generally have lower levels of government debt compared to developing countries.

6. Inflation rates: Higher inflation rates in developing countries can lead to higher interest rates to compensate for the erosion of purchasing power. Developed countries typically have lower inflation rates, resulting in lower interest rates.

7. Foreign investment: Developed countries may attract more foreign investment due to their stable economic and political environments, leading to lower interest rates. Developing countries may offer higher interest rates to attract foreign investment and finance their development projects.