Gidday Mackaydon
In regards to the Galga' and' Juno no, Because those shipwrecks are on American Territory and are not covered by 1899 treaty.
Under terms of surrender As the 1899 treaty in Paris covers only the then 1898 pre war Spanish territories of Cuba. Puerto Rico, Philippines and Marinas.
The Treaty of Paris provided for the independence of Cuba from Spain, but the Congress ensured indirect US control by the Platt Amendment and the Teller Agreement. Spain relinquished all claims of "sovereignty" over and title to Cuba. Upon Spain's departure.
The treaty also specified that Spain would cede Puerto Rico and the other islands under Spanish sovereignty in the West indies as well as the island of Guam in the Mariana Islands to the US.
The treaty also specified that Spain would cede the Philippine Islands, including the islands within a specified line, to the US, and that the United States would pay to Spain the sum of twenty million dollars. Specifics of the cession of the Philippines were later clarified by the 1900 by treaty of Washington.
In regards to other ex South American countries? Treaties signed In 1834 the Regnant Queen Isabella II of Spain decided that times had changed, that a more modern approach was needed, and started consulting other members of her government. On December 16, 1836 the Congress of Spain issued a decree authorizing the Spanish Government to renounce its territorial and sovereign claims over its domains in continental Americas.
Each ex Spanish colony had their own separate agreements.That process did not finish until 1904.
Crow