Answer:
Modern classification was invented in order to classify the organisms more clearly.
The organism were classified based on their similarity in characters. Then day by day the number of organisms increased and there was confusion in classifying the organism based on the prior knowledge.
Thereafter modern classification was introduced to simplify the classification by offering more wide are for the classification of a wide variety of organism.
More diversity of species of organism is available these days so there was a need to revise the classification with some modifications in it.