But it wasn’t. No one knew what was in the ground. Hell, there were bombs all over the place still, they even find them regularly during construction work right now. They needed to build as much housing as possible in as little time as possible. The building material was often the rubble from destroyed buildings. Electricity was rebuilt quickly as well. Germany had a fully function electricity network again within a few years after the war. With utility poles like the US, cause it had to be fast. Then, in the 70s, the conscious decision was made to put them underground. Germany was fully rebuild by then already. Saying that decision 30 years after the war is connected to the build up is simply wrong. Another great way to show this rebuild argument doesn’t make sense is simply using another country as example: Switzerland. They also mainly have underground powerlines and we’re not destroyed during the war at all. Now, I have to say that I do not know anything about the history about this in Switzerland, but their underground lines are for sure not based on rebuilding the country from rubbles. Denmark is the same as well.