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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
this was required by
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "this was required by" is correct and usable in written English.
You can use it to indicate that something was mandated or necessary due to a specific authority, rule, or condition. Example: "The changes to the policy were implemented because this was required by the new regulations set forth by the government."
✓ Grammatically correct
News & Media
Science
Alternative expressions(1)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
5 human-written examples
This was required by guidelines under which the New York Coliseum site was awarded for development to Stephen M. Ross, Kenneth A. Himmel and William L. Mack.
News & Media
They also demanded that the polling company ICM reveal the identity of the individual who commissioned the poll, claiming this was required by polling company rules.
News & Media
This was required by the federal USA Patriot Act of 2001, given the account's sharply increased balance, which reached $771,000 by the end of that year.
News & Media
Lib Dem officials, determined to quell a nascent revolt against Clegg's leadership, had demanded that ICM, the polling company, reveal the identity of the anonymous individual who commissioned the poll, claiming this was required by polling company rules.
News & Media
This was required by a drying trend following the last ice age.
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
This is required by Newton's third law.
Encyclopedias
This is required by the 1974 Tunney Act to assess if the antitrust settlement is in the public interest.
News & Media
This is required by the syntactic constraints of 可 kĕ.
Science
Can confidently invite and respond to questions if this is required by the task.
Science
The message generation frequency typically is 10 Hz, since this is required by several of the cooperative road safety applications defined in [29, 30].
This is required by the church's own teaching.
News & Media
Expert writing Tips
Best practice
When using "this was required by", ensure that the 'this' clearly refers to a specific action, condition, or item mentioned previously to avoid ambiguity. Clarity is key for effective communication.
Common error
Avoid using "this was required by" without specifying the source of the requirement (e.g. "law", "regulation", "company policy"). Always clarify the authority or reason behind the requirement to provide context and credibility.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this was required by" functions as a causal connector, indicating that something occurred due to a specific necessity, obligation, or mandate. Ludwig shows this phrase is utilized to explain actions taken in response to a rule, law, or guideline.
Frequent in
News & Media
40%
Science
40%
Wiki
20%
Less common in
Encyclopedias
0%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "this was required by" functions as a causal connector to justify actions or decisions by citing the necessity imposed by a rule or regulation. Ludwig AI verifies its grammatical correctness and indicates its primary use in news and scientific contexts. It is important to clearly specify the source of the requirement when using the phrase to prevent ambiguity. While common, alternative phrasing can enhance clarity or adjust formality. The frequency of this phrase is uncommon, indicating targeted and purposeful usage. As Ludwig AI shows, it serves to clarify actions that are not arbitrary but dictated by external factors.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
this was necessitated by
Replaces "required" with "necessitated", implying a strong need or compulsion.
this was dictated by
Substitutes "required" with "dictated", suggesting that something was commanded or predetermined.
this was made necessary by
Emphasizes the process of becoming necessary due to circumstances.
this was stipulated by
Replaces "required" with "stipulated", indicating a specific condition or agreement.
this was mandated by
Uses "mandated" instead of "required", highlighting an authoritative command.
this stemmed from the need for
Indicates that something originated from a specific need, altering the structure of the sentence.
the need for this arose from
Inverts the sentence structure to emphasize the origin of the necessity.
this was a prerequisite of
Replaces "required" by "prerequisite", emphasizing a prior condition.
compliance with this demanded
Highlights the act of complying and its demands, changing the sentence's focus.
this was essential due to
Substitutes the expression with "essential due to" to showcase the important character of an action.
FAQs
How can I rephrase "this was required by" to sound more formal?
For a more formal tone, consider using phrases like "this was mandated by", "this was stipulated by", or "this was necessitated by". These alternatives add a layer of authority and precision to your writing.
What is the difference between "this was required by" and "this was necessary because of"?
"This was "required by"" implies an external rule or authority imposed the need, while "this was necessary because of" explains a need arising from circumstances or logical consequences. The first emphasizes obligation, the second emphasizes causality.
Can I use "this was required by" in informal writing?
While grammatically correct, "this was "required by"" may sound slightly formal for very casual writing. In such contexts, consider alternatives like "this needed to happen because" or "this had to be done because" for a more relaxed tone.
What are some common contexts where "this was required by" is frequently used?
You'll often see "this was "required by"" in legal documents, policy explanations, academic papers, and news reports when explaining actions mandated by rules, regulations, or specific conditions. It's useful in any situation where you need to state an obligation or necessity.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested