Between 55 BC and the 40s AD, Britain was not invaded. Augustus prepared invasions in 34 BC, 27 BC and 25 BC. The first and third were called off due to revolts elsewhere in the empire, the second because the Britons seemed ready to come to terms. Strabo's "Geography", written during this period, says that Britain paid more in customs and duties than could be raised by taxation if the island were conquered.