What is art critic and collector clement Greenberg famous for?

Endorsing artist Jackson Pollock and the ideals of Abstract

Explanation:

Clement Greenberg, was an exceptional author below the anonymity of K. Hardesh, who was an American columnist recognized for essentially his powerful visible art critic. He was intimately connected with American Modern art in the mid-20th century. He was the one who represented Abstract Expressionism.

Clement Greenberg was an art critic and collector who advocated for a formalist aesthetic. He was best known as an early champion of Abstract Expressionism.