in the later vedic period the sabhas and the samitis lost their imortance. womens were no longer allowed in the sabha.the king was guided by the nobles and brahmans.the expansion of the kingdom made the king more powerful.the kings performed the yagnas or the sacrifices to gain more and more power.they also married the girls of another kingdoms to expand his kingdom.they performed the rajsueyagnas inorder to receive the the of chakrabharty samrat or the head of all the kings.the kings . they also performed the asvamedha yagna to make friends with another kings.