What is one feature that distinguishes homo sapiens from its predecessors?

The brain. Modern homo sapiens such as humans have much larger brain than the early homo sapiens due to the fact that food at the time was becoming scarce so the need for the homo sapiens to become smarter was a necessity. And because of this early homisapiens brains evolved to become much larger than what they were before

from the conditions of the working class in england by friedrich engels,the main idea is :

manchester's leaders hoped to oppress its working class to benefit factory owners.

The inuted states of america