Think you are asking about nij&ryoti system, So here is the answer
ryoti system was the type of indigo cultivation in which planters provided the seeds and drill and the cultivators sowed the seeds and look after them.
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They broke the agreement with Japan and as a result suffered many losses at their hands, sparking unrest.
Brunelleschi created perspective, it was important because it was never seen before and allowed artists to draw what their eyes could see
