Historical clue formulations

• Home of Dar es Salaam — 2021-01-26
• Country formed by a 1964 merger — 2018-04-07
• Home of the highest point in Africa — 2017-05-14
• Land on the Indian Ocean — 2013-04-26
• Jane Goodall study site — 2012-10-13
• Ngorongoro Crater locale — 2006-09-02
• Neighbor of Kenya — 1996-08-19
• Dar es Salaam's land — 1995-03-14
• Country since 1964 — 1994-05-21