Question:
The Amish (; Pennsylvania German: Amisch, German: Amische) are a group of traditionalist Christian church fellowships with Swiss Anabaptist origins. They are closely related to, but distinct from, Mennonite churches. The Amish are known for simple living, plain dress, and reluctance to adopt many conveniences of modern technology. The history of the Amish church began with a schism in Switzerland within a group of Swiss and Alsatian Anabaptists in 1693 led by Jakob Ammann.
Most Amish communities that were established in North America did not ultimately retain their Amish identity. The major division that resulted in the loss of identity of many Amish congregations occurred in the third quarter of the 19th century. The forming of factions worked its way out at different times at different places. The process was rather a "sorting out" than a split. Amish people are free to join another Amish congregation at another place that fits them best. In the years after 1850, tensions rose within individual Amish congregations and between different Amish congregations. Between 1862 and 1878 yearly Dienerversammlungen (ministerial conferences) were held at different places, concerning how the Amish should deal with the tensions caused by the pressures of modern society. The meetings themselves were a progressive idea; for bishops to assemble to discuss uniformity was an unprecedented notion in the Amish church. By the first several meetings, the more traditionally minded bishops agreed to boycott the conferences. The more progressive members, comprising approximately two-thirds of the group, became known by the name Amish Mennonite, and eventually united with the Mennonite Church, and other Mennonite denominations, mostly in the early 20th century. The more traditionally minded groups became known as the Old Order Amish. The Egli Amish had already started to withdraw from the Amish church in 1858. They soon drifted away from the old ways and changed their name to "Defenseless Mennonite" in 1908. Congregations that took no side in the division after 1862 formed the Conservative Amish Mennonite Conference in 1910 but dropped the word "Amish" from their name in 1957. Because there was no division in Europe, the Amish congregations remaining there took the same way as the change-minded Amish Mennonites in North America and slowly merged with the Mennonites. The last Amish congregation in Germany to merge was the Ixheim Amish congregation, which merged with the neighboring Mennonite Church in 1937. Some Mennonite congregations, including most in Alsace, are descended directly from former Amish congregations.
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Other groups name

Answer:
Amish Mennonite,

Question:
Stallman was born to Alice Lippman, a school teacher, and Daniel Stallman, a printing press broker, in 1953 in New York City. Stallman had a difficult relationship with his parents, as his father had a drinking habit and verbally abused his stepmother. He later came to describe his parents as "tyrants". He was interested in computers at a young age; when Stallman was a pre-teen at a summer camp, he read manuals for the IBM 7094.
As a first-year student at Harvard University in fall 1970, Stallman was known for his strong performance in Math 55. He was happy: "For the first time in my life, I felt I had found a home at Harvard." In 1971, near the end of his first year at Harvard, he became a programmer at the MIT Artificial Intelligence Laboratory, and became a regular in the hacker community, where he was usually known by his initials, RMS (which was the name of his computer accounts). Stallman received a bachelor's degree in physics (magna cum laude) from Harvard in 1974. Stallman considered staying on at Harvard, but instead he decided to enroll as a graduate student at MIT. He pursued a doctorate in physics for one year, but left that program to focus on his programming at the MIT AI Laboratory. While working (starting in 1975) as a research assistant at MIT under Gerry Sussman, Stallman published a paper (with Sussman) in 1977 on an AI truth maintenance system, called dependency-directed backtracking. This paper was an early work on the problem of intelligent backtracking in constraint satisfaction problems. As of 2009, the technique Stallman and Sussman introduced is still the most general and powerful form of intelligent backtracking. The technique of constraint recording, wherein partial results of a search are recorded for later reuse, was also introduced in this paper. As a hacker in MIT's AI laboratory, Stallman worked on software projects such as TECO, Emacs for ITS, and the Lisp machine operating system (the CONS of 1974-1976 and the CADR of 1977-1979--this latter unit was commercialized by Symbolics and LMI starting around 1980). He would become an ardent critic of restricted computer access in the lab, which at that time was funded primarily by the Defense Advanced Research Projects Agency. When MIT's Laboratory for Computer Science (LCS) installed a password control system in 1977, Stallman found a way to decrypt the passwords and sent users messages containing their decoded password, with a suggestion to change it to the empty string (that is, no password) instead, to re-enable anonymous access to the systems. Around 20% of the users followed his advice at the time, although passwords ultimately prevailed. Stallman boasted of the success of his campaign for many years afterward.
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what did he study at harvard?

Answer:
Stallman received a bachelor's degree in physics (magna cum laude) from Harvard in 1974.