Under Ceausescu sport became a vital source of propaganda.
These birds and their eggs became a vital source of food; as the supply of seal meat dwindled to nothing, the party was reduced to eating rotten flippers, hide, or any part of a seal that was remotely edible.
Such trials could grind any person down, but for Coleman they became a vital source for poetry that compelled attention to racism and hatred — the themes that most drove her to transcend the barriers of her birth and take her place as one of the city's most perceptive writers.
Product placement has become a vital source of funds for the film industry, with companies spending about $1.8bn last year to get on-screen prominence for their brands.
In an age when illegal downloading has decimated profits in the entertainment industry, live events have become a vital source of revenue; the O2 has hosted music, sport, comedy, Star Wars spinoffs and giant mechanical dinosaurs.
The borough's largest library branch, the Bronx Library Center, opened not far from our house in 2006, and has become a vital source of computers, Wi-Fi, job fairs, and community events.
Such fees were first approved in 1992 and have become a vital source of F.D.A. financing, although some consumer groups say they have led the agency to become too cozy with those it regulates.
With Mr Valdez out of the picture, Héctor Beltrán Leyva will probably consolidate control over what remains of his brother's empire.Perhaps most importantly, since Mr Valdez was captured alive, he could become a vital source of intelligence.
Trust companies, together with other nonbank financial institutions like brokerage firms, have become a vital source of credit, allowing banks to arrange off-balance-sheet refinancing for maturing loans that riskier borrowers, like local governments, cannot repay from their internal cash flow.
Tourism has become a vital source of revenue for Cuba since the loss of its Soviet prop.
The Grand Duchy had also become a vital source of raw materials, industrial products, food, and labour for the growing capital city of Russia.
