It is well established that Urban preached the sermon at Clermont which gave the impetus to the crusades.
This discovery gave a new impetus to prospecting in south-western Nevada, and it was soon discovered that the district was not an isolated mining region but was in the heart of a great mineral belt.
A fresh impetus to commerce was given by the opening in 1910 of the railway from Tongking, a line built by French engineers and with French capital.
The zone tariff has given a great impetus both to passenger and goods traffic in Hungary, and has been adopted on some of the Austrian railways.
The first great impetus of change in the configuration of London was given by the great fire, and Evelyn records and regrets that the town in his time had grown almost as large again as it was within his own memory.