Example sentences of "[noun sg] has [vb pp] a crucial role " in BNC.

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1 Founded in 1954 in Florida , the company has grown to become the world 's second largest chain of its kind and franchising has played a crucial role in this development .
2 The lesson of history is quite simple : animal experimentation has played a crucial role in many major medical advances and it is reasonable to expect that it will continue to do so .
3 Unemployment has played a crucial role both in bringing the underclass into existence and to locking it in place .
4 The Press has played a crucial role in every story , despite being accused of lying , invention and worse .
5 In this article we will discuss why traditional medicine has played a crucial role in the popular system and examine some of the problems and contradictions communities and health workers have faced in using traditional medicine to revolutionize the health process .
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