Sentence:  It is in part this <WSD>epochality</WSD> that leads to Jeyifo's proleptic postcolonialism. However this was in no small part because the <WSD>epochality</WSD> of the nation took shape under the aegis of a decolonization process that then succeeded in elevating the struggles and sacrifices of political elites against colonialism to the level of an ontological necessity and thereby projected them as the privileged subjects of representation. 
Meaning of the word marked with <WSD> tags:  A state of being momentous; importance; significance.