What did Olmstead, Otis, Sullivan, and Roebling have in common?

Responses

Their contributions and innovations made modern cities possible.

Their contributions and innovations made modern cities possible.

They all built industrial empires as business tycoons.

They all built industrial empires as business tycoons.

Their ideas changed the way modern governments function.

Their ideas changed the way modern governments function.

They were all landscape architects.

Their contributions and innovations made modern cities possible.