Civil Services Examination · வினா 33
Indigo cultivation in India declined by the beginning of the 20th century because of
விடையைக் காட்டு & விளக்கம்
விடை: (B) its unprofitability in the world market because of new inventions
விளக்கம்
The invention of synthetic indigo (Germany, late 1890s) made natural indigo unprofitable.