The authors claim is not supported by strong evidence
An opposing claim is a claim against your thesis statement. A counterclaim goes along with an opposing claim that proves or shows evidence as to why your opposing claim is what it is.
a cross claim
To refute a claim with a counterclaim, you must support your argument with evidence to ensure the validity of your claims.
If you are the plaintiff by counterclaim - that means you were the defendant in a previous claim and are now offsetting that claim with a counterclaim. You reverse your role with this action and point the finger back at the original plaintiff.
A counterclaim is a claim (lawsuit) made by a defendant (the person getting sued). Often times, if a person is taken to court they will file a claim against the person suing them. This is called a counterclaim. The person making the counterclaim is the counterclaimant.
We don't know who "this" historian is so we don't have the answer.
The burden of proof is upon the party asserting the claim. That person or entity is usually called the Plaintiff, but in some jurisdictions may be called the Claimant. If the person or entity being sued (usually called the Defendant) asserts a claim back (a counterclaim) against the Plaintiff, he/she/it has the burden of proof with respect to the allegations of the counterclaim.
Claim is usually given a prefix, not used as one. Some prefixes for the word claim below: disclaim, reclaim, overclaim, counterclaim, exclaim, acclaim, proclaim
When you find yourself agreeing with a counterclaim that is made by your opponent. APEX