The phrase "a core cause" is correct and usable in written English.
It can be used when discussing the fundamental reason or primary factor behind a particular issue or situation.
Example: "The study aimed to identify a core cause of the decline in bee populations, which is critical for understanding environmental changes."
Alternatives: "a fundamental reason" or "a primary factor".
Teenage childbearing was denounced as a core cause of poverty and all its ills, from crime and drug addiction to bad schools and welfare dependence.
A survey of most classroom libraries will reveal a core cause of the "knowledge deficit": the absence of nonfiction books and materials.
And feeling low in social status, or feeling that you don't have the respect of others, is a core cause of depression.
It seemed the perfect rallying moment for a core cause, and the companies hoped that other technology firms would follow their lead.
"One positive thing is that he understands the problem of root causes of immigration," said Mr. Sharry, noting that General Kelly had spoken about the need to stem violence in Central American countries, a core cause of immigration toward the United States.
This causes the core to collapse, but where the collapse of an iron core causes endothermic fusion to heavier elements, the collapse of an oxygen core creates runaway exothermic fusion which completely unbinds the star.
Social services help after trauma, but a long-term solution requires identifying the core cause.
The concept of dystechnia proposed herein is not about mere individual challenges to learning and adoption as described by Feltham (2004), although that aspect is certainly a core contributing cause.
In 2013, Andrew Paciorek, of the Federal Reserve, wrote a research paper titled "The Long and Short of Household Formation". In this work, he outlines the core cause of the household formation deficit to be a bad labor market.
The more exposure the Ukip leader has enjoyed, the less popular his core cause has become.
Historians continue to debate the core cause of the war, and movies get made like Glory, Gettysburg, Cold Mountain and Robert Redford's recent The Conspirator.
