Traders said two factors might have contributed to the sudden rise in prices at the end of the day.

African American culture has contributed the largest part to the rise of jazz.

But several factors may have contributed to the recent rise in violent incidents.

Medical care and natural gas prices also contributed to the rise, he said.

Several factors seem to be contributing to the rise in long-term unemployment.

But in truth the educational system was to contribute to the rise of ideological politics.

Their income on the other hand did not contribute to the social and economic rise of the estate workers.

Not one of these students contributing to the rise was a white American male.

The lack of credit is huge and has contributed to the rise in unemployment.

This contributed to the rise of social tension between the two groups.