Indian Culture
Vedangas (Limbs of Vedas) are :

Vyakarna (grammar) and Nirukta (etymology)
All of these
Siksha (phonetics) and Kalpa (rituals)
Chhanda (metrics) and Jyotisha (astronomy)

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Indian Culture
The four important dynasties that stand out prominently in the sixth century B.C. are :

The Haryankas, the Ikshvakus, the Pauravas and Pradyotas.
The Guptas, the Ikshvakus, the Pauravas and the Mauryas.
The Haryankas, the Guptas, the Pauravas and Pradyotas.
The Haryankas, the Ikshvakus, the Pauravas and the Mauryas.

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