Rosetta Stone the Napoleonic Wars, a long-running dispute over the relative value of Young and Champollion's contributions to the decipherment and, since 2003, demands for the stone's return to Egypt. Two other fragmentary copies of the same decree were discovered later, and several similar Egyptian bilingual or trilingual inscriptions are now known, including two slightly earlier Ptolemaic decrees (the Decree of Canopus in 238 BC, and the Memphis decree of Ptolemy IV, c. 218 BC). The Rosetta Stone is, therefore, no longer unique, but it was the essential key to modern understanding of Ancient Egyptian literature and civilisation. The term "Rosetta Stone"
Rosetta Stone Learning Center brand was acquired and absorbed in Dean Morgan, providing one-to-one and group lessons at two locations in Umeda and Namba, in Osaka. In 2008, the Hummingbird Pronunciation school brand was acquired and integrated into Dean Morgan. Hummingbird Pronunciation is a patented English pronunciation method. As of April 2012, there are a total of ten schools located in Tokyo and Osaka, with nearly 2,000 students. In April 2015, Dean Morgan formed a capital and business alliance with Rosetta Stone Inc. and subsequently rebranded the schools to Rosetta Stone Learning Center. The company then relocated the headquarters from Shinjuku, Tokyo to Ginza,