Its long-term business health is a keystone of access to medical care in the state.
From the freep.com
For the foreseeable future, the United States and the international community will serve as keystone of the Afghan state.
From the theatlantic.com
The tiny enclave of Abkhazia, whose historical roots stretch back to more than a thousand years before Christ, has emerged as the keystone to Georgia's future as an independent state.
From the time.com
The system known as the European welfare state was built after World War II as the keystone of a shared prosperity meant to prevent future conflict.
From the washingtonpost.com
The retirements are a keystone of Gov. Jennifer Granholm's plan to minimize budget cuts to schools and trim the state budget.
From the freep.com
The keystone that is missing from that doorway to history is that the state and local governments were supported by a majority of the people.
From the economist.com
The site was the keystone of a defensive system constructed in the early period of Haitian independence to protect the young state from French attempts to reclaim it as a colony.