The growth of the Internet has created significant challenges for intellectual property law.

And that creates special challenges for the author of a strategy guide.

Indeed, continued growth has created enormous challenges for the city and region.

The number of new immigrants has also created enormous challenges for the city's schools.

But the political environment also created challenges for liberal Democrats.

Language, religion, and culture barriers create challenges for an emergency medical service.

They felt the need to work together to help the modern world grow closer to them, creating huge challenges for their traditional culture.

The coming of peace in 1945 created new challenges for America's big cities and state governments.

This of course creates fresh challenges, which must be addressed.

The digital revolution has created new challenges within this dual system.