Transatlantic travel played a major role in the expansion of Western civilization into the Americas.

Given its mineral riches, the area played a significant role in the expansion of Roman metallurgy.

The community played a major in the westward expansion of the United States.

Historians agree that Jackson played a critical role in the expansion of the United States.

He played a major part in the post-war expansion of the company from a highly specialised family concern to a diversified international business.

It is argued that these private interests have played a key part in the expansion of prison, as means to deal with social problems.

Dextran-based products were to play a significant role in the further expansion of Pharmacia.

Roman and Arab occupiers also played a significant role in the expansion of the region.

The Water Mages played an important role in the expansion.

Fei-Ranis model goes a step beyond and states that agriculture has a very major role to play in the expansion of the industrial sector.