Bridges



Bridges, they are meant to span a physical obstacle such as a river or a cliff, though they may seem to be simple structures, they are technological tools that require ingenuity. To build them humans use Steel ,  Stone Wire And even living vegetation

so everybody can reach the places they want to go. And they have existed in the world for at least 3000 years when Greeks used them.

Bridges make transportation easier, they have financial benefits, but also social and intellectual.