The phrase "allowed in hundreds of" is correct and usable in written English.
It can be used to indicate that something is permitted or accepted in a large number of instances or locations.
Example: "The new policy is allowed in hundreds of schools across the country."
Alternatives: "permitted in numerous" or "accepted in many".
Other legislation the Republicans are considering would allow in hundreds of thousands of temporary immigrant workers but deny them the legal protections, like the right to change jobs, that would help them resist employer abuse.
In its bid for the 2022 World Cup, Japan promised to record games in 360 degrees with 200 HD cameras and broadcast them around the world live in 3D, allowing players to appear in hundreds of stadiums simultaneously as holographic projections.
That link followed the launch of the Shanghai-Hong KoNovember 2014ect in November 2014, which allowed international investors to trade in hundreds of Shanghai-listed A-shares as well as Hong Kong stocks.
The best tips will appear in print in next weekend's Travel section and the winner, chosen by Tom Hall of Lonely Planet, will receive a £200 hotel voucher from Hotels.com, allowing you stay in thousands of places worldwide.
In particular, campaigns to encourage peaceful defections, along with AU-led military operations, have reduced the LRA to one-fourth of its fighting capacity in 2005, and allowed hundreds of abducted young people to escape and return home.
A loophole in the first law allowed hundreds of new pot shops to proliferate.
Gen. Eric H. Holder Jr., saying his Department of Justice has refused to turn over key documents in the Department of Alcohol Tobacco and Firearms gun-tracking investigation and that the Obama administration is trying to hide its involvement in the program that allowed hundreds of U.S. weapons to fall into the hands of Mexican drug cartels.
Issa said he and his Republican colleagues believed that Justice Department officials were suppressing evidence that they approved the gun-walking tactics used in the operation, which ultimately allowed hundreds of weapons to flow from the U.S. to violent Mexican drug cartels.
Instead, the Islamist government allowed in radical foreign preachers who lured thousands of vulnerable young people to join al-Qaeda and the Islamic State in Syria and Iraq.
The Trump administration released a list of hard-line immigration principles late Sunday that threaten to derail a deal in Congress to allow hundreds of thousands of younger undocumented immigrants to remain in the country legally.
