Final answer:
The social crises of the 1600s were fueled by religious conflicts like the Protestant Reformation and politico-economic upheavals leading to major shifts in social structures.
Step-by-step explanation:
Among the major elements underlying the social crises of the 1600s, religious conflicts and schisms played a significant role. This period experienced the Protestant Reformation initiated by Martin Luther and continued with wars such as those between Spain and England. The Catholic Church and Catholic nations struggled as Protestantism became more prevalent. This religious turmoil often intersected with and exacerbated political and economic challenges. Moreover, the era saw economic upheaval and disparities as feudalism's decline gave way to capitalist structures, leading to social mobility for some yet widespread poverty and inequality.
Additionally, political instability and revolutions were prevalent. The period witnessed England's civil wars in the 1640s and the Glorious Revolution in 1668, challenging the very foundations of monarchical and parliamentary power. The Enlightenment and subsequent revolutions such as the French and American Revolutions also reflected the profound political shifts. Despite the emergence of monarchical bureaucracies trying to centralize power, social disparities persisted, highlighting the complex interplay between evolving economic, social, and political structures.