Https://upload.wikimedia.org/wikipedia/commons/a/aa/Pacific_Culture_Areas.pngRarotonga is encircled by a primary street the follows the coast line. Due to the dense forest and mountainous inside there aren't any roads that cross the island. Grand Island's company trade territory was expanded as other Union Pacific subsidiary principal and branch lines have been built in the 1879-1891 https://shippingcontainerstothepa73614.full-design.com/Little-Known-Facts-About-Pacific-Islands-Freight--59227668