The correct answer is a) Tea.
Tea is a major historical export from Assam. The first tea bushes were planted in Assam in the 1820s, and the tea industry quickly became one of the most important industries in the region. Assam tea is known for its strong flavor and aroma, and it is exported to many countries around the world.
Silk is a type of fabric that is made from the cocoons of silkworms. Silk is a very strong and durable fabric, and it has been used for centuries to make clothing, bedding, and other textiles. Silk is not a major historical export from Assam.
Spices are a type of food that is used to add flavor to other foods. Spices are often used in cooking, and they can also be used to make perfumes, cosmetics, and other products. Spices are not a major historical export from Assam.
Jute is a type of fiber that is used to make a variety of products, including burlap, twine, and rope. Jute is a major crop in Assam, and it is one of the most important agricultural products in the region. However, jute is not a major historical export from Assam.
In conclusion, the correct answer to the question “Which product was a major historical export from Assam?” is a) Tea.