Historical clue formulations

• Kind of tea — 2025-12-14
• Region known for its silk and tea — 2025-07-17
• Indian state along the Himalayas — 2025-01-19
• Silk-producing region of India — 2024-10-01
• Variety #3, named for a region in India — 2024-07-16
• Tea variety — 2024-05-04
• Home to the world's largest population of Indian rhinos — 2024-03-29
• Variety of Indian tea — 2024-03-13
• Black tea region — 2023-09-06
• Indian tea region — 2022-08-24
• Silk center of India — 2021-03-24
• Kind of tea from India — 2020-12-14
• Indian state along the Himalayas — 2020-11-25
• State that borders Bhutan — 2020-08-21
• State whose capital is Dispur — 2020-06-28
• ___ tea — 2019-01-27
• Indian state known for its tea — 2018-12-13
• Indian state that exports tea — 2018-07-04
• Silk center of India — 2018-02-02
• Kind of tea from Asia — 2017-08-16
• Indian tea region — 2016-12-14
• Noted tea locale — 2016-08-28
• Indian state known for its tea and silk — 2016-05-02
• Region known for its black tea — 2015-06-24
• State that borders Bangladesh — 2014-10-29
• Indian state known for its tea — 2013-11-17
• Asian silk center — 2013-10-26
• Source of Indian black tea — 2013-08-20
• Tea-growing Indian state — 2012-10-10
• Source of much tea from Asia — 2012-09-17
• Northeastern Indian state — 2011-10-02
• State in NE India — 2011-08-08
• Source of Indian tea — 2011-04-24
• Silk-producing region of India — 2011-03-01
• Black tea from India — 2008-09-27
• Northeast state of India — 2008-04-13
• Tea-growing area of the Himalayas — 2007-08-05
• Indian tea source — 2006-08-04
• Indian silk center — 2004-10-13
• State bordering Tibet — 2004-06-20
• It's just south of the Himalayas — 2004-04-18
• Silk-producing region — 2003-12-23
• State of India — 2003-06-25
• Indian state — 2003-06-10
• State in NE India — 2002-11-18
• Northeast Indian state — 2002-10-20
• Area of India — 2001-10-29
• Land bordering Bhutan — 2001-05-24
• Neighbor of Bhutan — 2000-10-01
• Area bordering the Himalayas — 2000-08-12