the great wall of china
The planet itself has to be it. The "largest" manmade object depends on what you mean; heaviest (probably the great wall of China), longest single dimension (undersea communications cables) or volume (Fresh Kills landfill).
Kariba Dam / Lake Kariba is the largest manmade lake in the world.
Titanic
Lake Powell
The Earth's mantle is the largest thing in the planet in mass and volume.
white tail deere
its the earth it self
Needles, pins, and fasteners--made from metals and both natural and manmade fibers--comprise the largest share of this industry's output.
Technically there is no such thing as manmade leather as 'leather' can only be made from the tanned skins and hides of animals. Manmade leather generally refers to a vinyl or fabric product produced to imitate the look and feel of leather or suede Hope this helps
There is no such thing as a largest prime number - there can't be. The largest KNOWN prime number was found by the GIMPS project.
Manmade actually.
Manmade