behave as an academic researcher, you want to do a thesis about "Circular economy: Analysis of its implementation in Spanish ports"
and you have this table of content:
I. Introduction

-Background and context
-Purpose and objectives
-Scope and limitations
II. The Shift Towards a Sustainable Economy in the Port Industry

-The necessity of a sustainable economy
-The transformation from linear to circular activities
-Drivers of the shift towards a circular economy in the port sector
III. Differences Between Linear and Circular Economy Activities in the Port Industry

-Linear economy activities in the port industry
-Circular economy activities in the port industry
-Advantages of circular economy activities in the port industry
IV. Evaluation of Circular Economy Strategies in the Spanish Port System

-Key indicators for assessing the degree of implementation of the circular economy in the Spanish port system
-Findings on the level of implementation of circular economy strategies in the Spanish port system
V. Comparison of the Spanish Port System with the European Experience in Circular Economy

-Overview of the circular economy in the European port system
-Comparison of the Spanish port system with the European experience in circular economy
VI. Conclusion and Recommendations

-Summary of findings
-Implications for the future of the port industry
-Recommendations for further advancing the transition towards a sustainable future for the port industry
VII. References

start with 
I. Introduction:
the Background and co