The borders of Retjenu shifted with time, but it generally consisted of three regions.

Although the borders shifted frequently during this period, the three parts can be identified, more or less, as follows:

The boundaries of the new Auckland East were similar to those of the original, although its borders often shifted.

As a result of the changing relations to Finland, the northern borders of Norrland have shifted.

The border constantly shifted around the area.

As the border shifted and they became U.S. residents, the culture shifted around them, too.

Few European states have seen their borders shift so frequently or so violently.

Indeed, Europe's geographic borders have shifted continually.

The external borders of the Union will shift to Ukraine, Moldova and Belarus.

The EU's external borders are shifting towards a faultline with very different cultural regions.