1.   During this period of rapid territorial expansion the empire was almost continually at war.

2.   Inevitably with the rapid expansion of the past few years the University is experiencing difficulties in providing sufficient academic as well as residential accommodation.

3.   Institutions took the hint, and began their current binge of rapid expansion.

4.   Most regions are enjoying rapid economic expansion.

5.   Rapid expansion of firms supplying temporary help will be responsible for much of the growth in this occupation.

6.   The advent of the transistor brought rapid expansion in set ownership.

7.   The industry underwent a period of rapid expansion.

8.   The rapid expansion of cities can cause social and economic problems.