Final answer:
Political and economic institutions often evolve in parallel, as exemplified by the IMF and World Bank created by the Bretton Woods Conference for global economic stability, and by evolving governmental structures in various nations that adapt to societal needs and challenges.
Step-by-step explanation:
Discussing the two main institutions that developed in parallel, it's clear that political and economic systems often evolve concurrently. Historically, we have the example of the International Monetary Fund (IMF) and the World Bank stemming from the Bretton Woods Conference, designed to provide global economic stability and aid in European reconstruction post-World War II. These financial institutions are prime examples of how the international community sought to balance market freedom with government rules to foster economic order and stability.
In another context, the development of governmental structures such as strong royal bureaucracies in France and the Two Sicilies, and institutional arrangements in England and Iberia, show how political institutions adapt to control nobility and protect the rights of various stakeholders. Similarly, in the American experience, the constitution is seen as evolving, adapting to the intricacies of a growing nation and the complexities of city life, suggesting a written and an unwritten constitution working in tandem. These instances affirm that behind constitutional and formal changes lie the dynamic forces of societal needs and challenges, prompting the adaptation and evolution of political institutions.