Geography Is Destiny: Telegraph Cables Circa 1922
Looks very similar in design to our present fibre optic subsea cable networks. For example, the Red Sea is a telegraph cable highway and Singapore is a telegraph cable hub. However, the Persian Gulf is not important because hydrocarbons won't be discovered there for another 30 years. Note the cable connecting South Africa to Australia, which is reminiscent of Google's Umoja cable. Note the cables connecting Argentina and Brazil to Senegal and South Africa, but Nigeria, a major hub today, has no connectivity.