B. Interchangeable parts were identical parts that could be exchanged for one another in the manufacture of guns, clocks, and other goods.
The Indus River valley civilization was a theocracy run by a priest and karma played a very big role in their laws
The civilization was plolythiestic and was made up of Hinduism bhudism and Jainism
The economy was based on agriculture and trade with the people there making items like cloth and pottery
The social hierarchy went like this
Gods
Kshatryia
Vaishya
Sudra
And then the untouchables
It is 270 needed out of a possible 538 since 1964
