zrównać z ziemią in English:

That new company could flatten the competition.

buildings are flattened / wipe out

A huge part of the business I worked for was focused on travel, and it was instantly flattened.

More than a year later, the line has been obliterated

The snow had obliterated their footprints.

The bombing raid has obliterated whole villages. / He tried to obliterate all thoughts of Mary from his mind. / The park had been obliterated beneath a layer of snow.

His office was obliterated