What action did the us take to get writes to the land of witch panama canal was built

Hay-Bunau-Varilla Treaty

a treaty signed on November 18, 1903, by the United States and Panama, which established the Panama Canal Zone and the subsequent construction of the Panama Canal. Panama granted the U.S. access to the land on which they could construct the canal. U.S. had control over the canal for 99 years, $10 million & 250,000 yearly

b toward the volcano.landward. the landward side of something is the side nearest to the land or facing the land, rather than the sea.