The Vedas do not belong to any other category. However, the Vedas themselves are divided into four parts namely the Samhitas, the Brahmanas, the Aranyakas and the Upanishads. The first two parts are generally focused on the rituals and they form the Karma-kanda portion of the Vedas. The later two parts form the Jnana-kanda (concerned with knowledge) portion of the Vedas. This categorizaton also comes handy at the time of differentiating between Purva and Uttara MImamsa. Purva-Mimamsa is based on the earlier (Purva = earlier) parts of the Vedas i.e. Samhitas and Brahmanas. Uttar-Mimamsa is based on the later (Uttar = later) parts of the Vedas i.e. Aranyakas and the Upanishads.
10 centuries, because it is 1000 years.
Why did long-distance trade decline in China between the fourth and sixth centuries?
Between 9th and 12th centuries.
Approximately three centuries
between the 6th and 4th centuries BCE
Between the 17th and 18th centuries