Where would the world be without steel?

Without steel, the world would lack many of the foundational structures and technologies that define modern civilization. Infrastructure such as bridges, skyscrapers, and transportation systems would be significantly weaker or non-existent, limiting urban development and connectivity. Manufacturing processes would be less efficient, impacting industries from construction to automotive. Overall, the absence of steel would lead to a less advanced, more fragile society with limited economic growth and technological progress.