The phrase "and asserts that many" is correct and usable in written English.
It can be used when introducing a claim or statement made by someone regarding a significant number of people or things.
Example: "The researcher conducted a survey and asserts that many participants believe in the importance of mental health awareness."
Alternatives: "and claims that numerous" or "and states that many".
A recent book by Charles Sykes, "A Nation of Moochers: America's Addiction to Getting Something for Nothing," asserts that many Americans, both rich and poor, finagle benefits they don't deserve.
One section of the memorandum, "Winning the Global Warming Debate," asserts that many voters believe there is a lack of consensus about global warming among scientists.
Mr. Ray had recently taken his case to the court of public opinion, with his lawyers issuing lengthy letters last month providing their account of what happened and asserting that many damaging statements made by witnesses to the police were inaccurate or taken out of context.
David A. Shaywitz, reviewing the book in The Wall Street Journal, praised Gladwell's writing style as "iconic", and asserted that "many new nonfiction authors seek to define themselves as the 'Malcolm Gladwell of' their chosen topic".
A July 2004 consultation paper, "Paying the Price", asserts that many female prostitutes are trafficked into and around Britain, and cites the evident foreignness of London's prostitutes as a sign that the crime may be widespread.Trafficking is in fact very rare, says Mr Tillbrook.
The editorial asserts that many states have cut spending significantly, and suggests that federal stimulus funds continue to be provided and that higher taxes be imposed on those who can afford it.
"The Repeal Amendment" (editorial, Dec. 27) asserts that many Americans who are economically struggling "have no progressive champion," and that the left has "ceded the field to the Tea Party and, in doing so, allowed it to make history".
It asserts that many artists from the 1960s to the present tried to relay or reflect some experience of dislocation.
But he asserts that many neighbors have "unrealistic expectations" about the amount of noise that is appropriate in the city.
Giuliani's media adviser, David Garth, who is a veteran of six New York mayoral campaigns, asserts that many of Manhattan's liberal Jewish voters are in "the milling stage".
