With time, their center of power shifted northward into what is now western and central Ukraine.

The centre of Spanish military power shifted dramatically in the early 18th century.

But the center was shifting, the mysterious heart of each Age where the real emphasis and excitement were.

But now the center of gravity in the partnership has shifted.

Since then, in this country whose economy still depends almost entirely on the government, the center of gravity has shifted here.

When the plane slowed down, the center of lift shifted forward.

No one wants the center of gravity to shift when one is in the air.

Artifacts also suggest that the kingdom's center might have shifted several times.

Over the decades, rock's center of gravity has shifted back and forth between each nation.

What happens if the centres of power in central and eastern Europe suddenly shift?