He would eventually prove instrumental in Thatcher's fall in 1990.

All proved instrumental as the Matosinhos outfit retained its league status at the season's close.

It has proven instrumental in the development of logic and modern science.

Some proved instrumental in establishing international reputations for architects and designers.

The society has proved instrumental in improving the state of education and research in physics throughout the country.

Robertson was team captain and proved instrumental to several key victories in school history.

This policy would prove instrumental in eclipsing the Mon civilization by the early 19th century.

The dissemination of information is proving instrumental in checking corruption.

He has come to terms with it, he said, and the experience proved instrumental in shaping many of his philosophical views.

It has also proved instrumental in finding the bodies of missing children (seven in one year, police records show).