Sanarwar 'Yancin Amurka ita ce sanarwar da taron Majalisar Dinkin Duniya na Biyu a Philadelphia, Pennsylvania, ya yi a ranar 4 ga Yuli, 1776. Sanarwar ta bayyana dalilin da ya sa Turawan Mulki goma sha uku da ke yaki da Masarautar Burtaniya ke daukar kansu a matsayin kasashe masu cin gashin kai goma sha uku. ba a karkashin mulkin Birtaniya.Tare da sanarwar, waɗannan sabbin jihohi sun ɗauki matakin farko na gamayya don kafa ƙasar Amurka.Wakilai daga New Hampshire, Massachusetts Bay, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Maryland, Delaware, Virginia, North Carolina, South Carolina, da Georgia ne suka sanya hannu kan sanarwar.Taimakon 'yancin kai ya sami ƙarfafawa daga ƙasidar Common Sense na Thomas Paine, wanda aka buga Janairu 10, 1776 kuma ya yi jayayya ga mulkin kai na Amurka kuma an sake buga shi sosai.^[29] Don tsara sanarwar 'Yancin kai, Majalisar Nahiyar Nahiyar Nahiyar ta biyu ta nada kwamitin biyar, wanda ya kunshi Thomas Jefferson, John Adams, Benjamin Franklin, Roger Sherman, da Robert Livingston.^[30] Jefferson ne kawai ya rubuta sanarwar, wanda ya rubuta ta musamman a keɓe tsakanin Yuni 11 da Yuni 28, 1776, a cikin wani gida mai hawa uku a 700 Market Street a Philadelphia.^[31]Bayyana mazaunan Mallaka goma sha uku a matsayin “mutane daya”, sanarwar a lokaci guda ta wargaza alakar siyasa da Birtaniyya, yayin da ta hada da jerin jerin abubuwan da ake zargin tauye hakkin Ingilishi da George III ya aikata.Wannan kuma yana ɗaya daga cikin manyan lokutan da ake kiran ƴan mulkin mallaka a matsayin "Amurka", maimakon ƙasashen da aka fi sani da United Colonies.^[32]Ranar 2 ga Yuli, Majalisa ta zabi 'yancin kai kuma ta buga sanarwar a ranar 4 ga Yuli, ^[33] wanda Washington ya karanta wa sojojinsa a birnin New York a ranar 9 ga Yuli. ^[34] A wannan lokaci, juyin juya halin ya daina zama rikici na cikin gida game da kasuwanci da manufofin haraji kuma sun rikide zuwa yakin basasa, tun da kowace jiha da ke da wakilci a Majalisa ta shiga gwagwarmaya da Birtaniya, amma kuma ya rabu tsakanin masu kishin Amurka da masu goyon bayan Amurka.^[35] Masu kishin kasa gabaɗaya sun goyi bayan 'yancin kai daga Biritaniya da sabuwar ƙungiyar ƙasa a Majalisa, yayin da masu aminci suka kasance da aminci ga mulkin Burtaniya.Ƙididdiga na lambobi sun bambanta, wata shawara ita ce yawan jama'a gaba ɗaya an raba tsakanin masu kishin ƙasa, masu kishin ƙasa, da waɗanda ba su da halin ko-in-kula.^[36] Wasu suna lissafin rarrabuwa a matsayin 40% Patriot, 40% tsaka tsaki, 20% masu aminci, amma tare da bambancin yanki.^[37]