As work progressed, engineers judged that a sea-level canal was impracticable.

Nicaragua has long been considered as a possible site for a new sea-level canal that could supplement the Panama Canal.

The majority of the members, including all the foreign members, approved a sea-level canal.

A sea-level canal would also probably provide a way to regulate the shoreline of the Sea in a predictable manner.

The Americans were again trying to get approval from the motley crew of neighboring governments for a sea-level canal.

An initial attempt by France to build a sea-level canal failed, but only after a great amount of excavation was carried out.

Wallace remained an advocate of the concept of a sea-level canal at Panama which later proved unworkable.

A concentrated effort succeeded in eradicating the causes of the tropical diseases, but the attempt to build a sea-level canal once again failed.

Disease and the sheer difficulty of building a sea-level canal were ultimately insurmountable.

The majority of the board recommended a sea-level canal.