Linked from
The 39 pages that link to Haber–Bosch process, each with the reason it gives.
NitrogenRelated: It makes atmospheric nitrogen available at industrial scale for fertilizer.
NitrateRelated: Its ammonia feeds fertilizers that can be converted into nitrate in soils.
Ammonium nitrateRelated: It provides the ammonia needed to manufacture ammonium nitrate at scale.
BASFRelated: BASF commercialized the process at scale, opening a major fertilizer business.
Industrial agricultureRelated: It made large-scale production of nitrogen fertilizer possible.