of

Almost all developing countries are situated in tropical climatic zones. It has been observed that the most economically successful countries are located in the temperate zone. Although social inequality and institutional factors are widely believed to be of greater importance, the dichotomy cannot simply be attributed to coincidence. The extremes of heat and humidity in most poor countries contribute to deteriorating soil quality and the rapid depreciation of many natural good.

Q) What is the use and the meaning of "of" underlined(colored) in the last sentence?

Is it the same as the examples below?

1. the love of a mother for her child
2. the role of the teacher
3. that old bike of Tommy's
4. the paintings of Monet.