The phrase "allowed the problem to" is correct and usable in written English.
It can be used when discussing a situation where someone or something has permitted an issue to occur or continue.
Example: "The lack of oversight allowed the problem to escalate beyond control."
Alternatives: "permitted the issue to" or "enabled the problem to".
"Unfortunately Washington has allowed the problem to fester for too long.
That allowed the problem to continue because Davol's assessment proved wrong.
Along with groups like Amnesty International and the International Labor Organization, they also argue that the government has allowed the problem to worsen by not effectively focusing on paramilitary gunmen and others who attack union workers.
The method allowed the problem to be formulated as a two-dimensional Helmholtz eigenvalue problem, which could be solved with general purpose software rather than custom written codes, but appeared to be limited to ducts without flow.
"Colombia's historic neglect of the nation's outlying areas has allowed the problem to fester, and it has been exacerbated by an economic downturn of a magnitude Colombia has not seen for 70 years," said Rand Beers, assistant secretary of state for international narcotics and law enforcement affairs.
But it's that over-reliance on technology and subsequent under-staffing that seems to have allowed the problem to fester.
It was not lack of regulation but rather ineffective regulation that allowed the problems to grow.
Coleman-Adebayo said that Browner allowed the problems to persist rather than trying to clean them up.
But he added: "The ayatollah has called on the demonstrators to remain calm, to keep a cool head and allow the problem to be resolved through negotiation".
The local government is not dealing with the situation on the ground, which of course only allows the problem to grow.
