"established state" is a correct and usable phrase in written English.
You would use it to refer to a situation that is now settled and in place. For example: After months of negotiations, the two countries finally reached an established state of peace.
France, unlike Britain, Germany, Spain or Italy – but like the US – has no established state religion.
Israel is not just an established state but a dynamic and prosperous one.
Among the many places these books were sent was the newly established State of Israel.
Until and even after they are established, state administered market orders are all about process.
California has already established state minimum wages of $4.25 an hour, as have Connecticut, Rhode Island, Washington and Oregon.
These laws, moreover, were administered by newly established state courts independent of the ʿulamāʾ, the Islāmic religious council.
National Church of Iceland, established, state-supported Evangelical Lutheran Church of Iceland.
Minnesota's Republican governor, Tim Pawlenty, credits the federation with inspiring him to initiate MinnesotaRxConnect.com, the most established state-run drug-importation service in the union.
They also created joint ventures with private capital and established state-owned enterprises, especially in the heavy industries, utilities, and transportation.
The results are statistically compared against established state-of-the-art algorithms and various forecasting methods (ADANN, ARIMA, UCM, and Forecast Pro).
As our cases have established, state-sponsored gender discrimination violates equal protection unless it serves important governmental objectives and the discriminatory means employed are substantially related to the achievement of those objectives.
