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