Raising a heavy post without machines - GIF

[Frank S]

The raising of this among many poles, initiates service to an area as an infrastructure, no matter how rural. Even in these surroundings, it's realized without there will be little prosperity. And communications are key to that. The idea concrete an easier material to source than straight wood is hard to grasp.

Or it's a real high density clothesline...

Not so hard to grasp the probable scarcity of long straight wood in any particular region there are some regions where wood is priced much the same as steel particularly when longer lengths are required.
Concrete on the other hand is well within the manufacturing capability of almost every culture around the world raw materials can be mined when available processed and sold locally or given the local geological strata does not yield the proper substance to make cement out of it can be hauled in bulk rather economically when compared to transporting long timbers or steel members. the same thing applies to steel rebar which can be purchased as a short low grade square steel billet run through a furnace drawn into long ribbons of round rebar Or if that technology is beyond the region coils of rebar are hauled in then straightened and sectioned to length. The only thing left would be to add aggerate sand and water and fashion a mold.