Continent world ultimately persisted with these being regarded as separate continents. From the late 18th century, some geographers started to regard North America and South America as two parts of the world, making five parts in total. Overall though, the fourfold division prevailed well into the 19th century. Europeans discovered Australia in 1606, but for some time it was taken as part of Asia. By the late 18th century, some geographers considered it a continent in its own right, making it the sixth (or fifth for those still taking America as a single continent). In 1813, Samuel Butler wrote of Australia
The Continent Makers problem for Graham is that the rescue of Jeru will gain nothing for him personally, but rather benefit only his rival Varnipaz; though Graham and Jeru love each other, people in her country wed on the basis of interest and advantage, considering love to have nothing to do with marriage. "The Continent Makers" is set on a future Earth governed by a World Federation in which Brazil has become the paramount great power, with Terran space travel monopolized by a Brazilian-dominated agency called the "Viagens Interplanetarias" ("Interplanetary Tours" in Portuguese). Interstellar travel is between the Solar System and nearby stellar