Answer:
Oh boy, this is a sticky situation! In general, when a country's borders change, the ownership of land within those borders also changes. In this case, since the land has technically been transferred to the United States, it would now be subject to U.S. laws and regulations. This could have a major impact on the land's ownership, as well as its use and development. I would recommend seeking legal advice on this matter, as there could be some complicated issues involved.