Given a sentence in Chinese, provide an equivalent paraphrased translation in English that retains the same meaning both through the translation and the paraphrase.

Example input: 1975年的NBA赛季 -  76赛季是全美篮球协会的第30个赛季。
Example output: The 1975 -- 76 season of the National Basketball Association was the 30th season of the NBA .
Example explanation: This is a correct and accurate translation from Chinese to English because the translated paraphrase retains the main message that between the years 1975-1976, the 30th NBA season occurred.
Q: 美国海军和国家公园管理局联合管理该纪念馆于1980年9月9日成立。
A:
The joint administration of the memorial by the National Park Service and the United States Navy was established on September 9 , 1980 .