The phrase "a dramatic manifestation" is correct and usable in written English.
It can be used to describe a striking or intense display of something, often in a context related to emotions, events, or phenomena.
Example: "The sudden storm was a dramatic manifestation of nature's power, leaving the townspeople in awe."
Alternatives: "a striking display" or "an intense expression".
A dramatic manifestation of the complexity of this new design equation was the Hawker Harrier, the first vertical/short takeoff and landing (V/STOL) fighter.
Kellman sees the incest as "a dramatic manifestation of immigrant insecurity, the newcomers' inability to invest their emotions in anything beyond the reassuring confines of the clan".
For me, it registered as a dramatic manifestation of Ramsay's controlling malevolence and Sansa's suffering, which I presume was what was intended.
If the main difference so far is purely the absence of stress, a dramatic manifestation of change is evident at Ryanair's new HQ, on a business park a few miles from the airport.
It turns out that the imagined implications of an Underwood Presidency were more menacing than any dramatic manifestation of them could possibly be.
A particularly dramatic manifestation of this fact is the sharp recorded increase in flows of worker remittances to the large number of developing countries that have been the source of these flows of labor services.
This phenomenon is likely to be the tip of the proverbial iceberg, a specific, most dramatic manifestation of a major facet of evolution that I denoted here 'general look-ahead effect.' Even more generally, the entire spectrum of epigenetic variation, in particular various modifications of DNA, chromatin proteins and RNA, potentially can be similarly assimilated by evolving genomes.
Over the past few years it has become a common belief that prison radicalisation is the most dramatic manifestation of a wider problem: the vehement rejection by many young French Muslims of what they see as a xenophobic and impious French republic.
Mr. Sahabi's letter is the latest and perhaps most dramatic manifestation of a battle between political dissidents and a justice system run by clerics that uses various forms of repression, including torture.
The racial disparity in parole decisions in the state is perhaps the most dramatic manifestation of a broken system.
In Lufeng, the protests were just the most dramatic manifestation of a long-running battle over land that residents say their ancestors reclaimed from the sea.
