Ignoring competing scholarship weakens the argument.

this directly relates to the literature review.

Suppose twenty historians argue

Industrialization depended upon

technology,

coal,

institutions.

You write

Industrialization depended only upon coal,

without mentioning the others.

Readers naturally ask

Did you ignore contrary evidence?

Or

Did you examine it and find it unpersuasive?

The literature review demonstrates that you know the existing debate before presenting your own position.