Which of the following statements regarding the Vedic period is incorrect?
1
The Vedic communities had established neither a taxation system nor a professional army
2
The later Vedic peasants contributed to the rise of trade and towns
3
In the later Vedic period, the tribal militia of the pastoral society was replaced by the peasant militia of agricultural society
4
The Rig Vedic society did not have a serving order in the form of the Shudras