By the convention concluded between the two Governments on the 19th of April, 1850, both parties covenanted that "neither will ever" "occupy, or fortify, or colonize, or assume or exercise any dominion over Nicaragua. Costa Rica, the Mosquito Coast, or any part of Central America." It was the undoubted understanding of the United States in making this treaty that all the present States of the former Republic of Central America and the entire territory of each would thenceforth enjoy complete independence, and that both contracting parties engaged equally and to the same extent, for the present and, for the future, that if either then had any claim of right in Central America such claim and all occupation or authority under it were unreservedly relinquished by the stipulations of the convention, and that no dominion was thereafter to be exercised or assumed in any part of Central America by Great Britain or the United States.