Question: In which county is the location of the National Historic Site of the president during the purchase of the state where the Bering Sea touches the U.S.?

<P0-S0> The Andrew Johnson National Cemetery is a United States National Cemetery on the grounds of the Andrew Johnson National Historic Site in Greeneville, Tennessee. <P0-S1> Established in 1906, the cemetery was built around the resting place of Andrew Johnson, the 17th President of the United States, and holds more than two thousand graves. <SEP> <P1-S0> trail of tears the trail of tears memorial monument at the new echota historic site in new echota, georgia which honors the 4,000 cherokees who died on the trail of tears date 1831 -- 1850 location southeastern united states and indian territory, present - day oklahoma participants u.s. government, u.s. army, state militias, five civilized tribes of cherokee, muscogee, seminole, chickasaw, and choctaw nations outcome the forced relocation of most of the five civilized tribes of the southeastern united states to indian territory under the indian removal act of 1830 signed by u.s. president andrew jackson clearing former native american lands for white settlement. <P1-S1> deaths cherokee (4,000) creek seminole (3,000 in second seminole war -- 1835 -- 1842) chickasaw (3,500) choctaw (2,500 -- 6,000) <SEP> <P2-S0> eisenhower national historic site preserves the home and farm of dwight d. eisenhower, the 34th president of the united states, and its surrounding property of . <P2-S1> it is located in cumberland township, adams county, pennsylvania, just outside gettysburg. <P2-S2> purchased by then-general eisenhower and his wife mamie in 1950, the farm served as a weekend retreat for the president and a meeting place for world leaders, and became the eisenhowers' home after they left the white house in 1961. <SEP> <P3-S0> Greeneville is a town in, and the county seat of Greene County, Tennessee, United States. <P3-S1> The population as of the 2010 census was 15,062. <P3-S2> The town was named in honor of Revolutionary War hero Nathanael Greene. <P3-S3> It is the only town with this spelling in the United States, although there are numerous U.S. towns named "Greenville". <P3-S4> The town was the capital of the short-lived State of Franklin in the 18th-century history of the Tennessee region. <SEP> <P4-S0> The Bering Sea is separated from the Gulf of Alaska by the Alaska Peninsula. <P4-S1> It covers over 2,000,000 square kilometers (770,000 sq mi) and is bordered on the east and northeast by Alaska, on the west by Russian Far East and the Kamchatka Peninsula, on the south by the Alaska Peninsula and the Aleutian Islands and on the far north by the Bering Strait, which connects the Bering Sea to the Arctic Ocean's Chukchi Sea. <P4-S2> Bristol Bay is the portion of the Bering Sea which separates the Alaska Peninsula from mainland Alaska. <P4-S3> The Bering Sea is named for Vitus Bering, a Danish navigator in Russian service, who in 1728 was the first European to systematically explore it, sailing from the Pacific Ocean northward to the Arctic Ocean. <SEP> <P5-S0> The Alaska Purchase (Russian: Продажа Аляски, tr. <P5-S1> Prodazha Alyaski) was the United States' acquisition of Alaska from the Russian Empire on March 30, 1867, by a treaty ratified by the United States Senate, and signed by president Andrew Johnson.