The Vedic texts says about the Yugas and classifies them as;
The Mahabharat describes Satyug as;
there were no poor and no rich; there was no need to labour, because all that men required was obtained by the power of will; the chief virtue was the abandonment of all worldly desires. The Krita Yuga was without disease; there was no lessening with the years; there was no hatred or vanity, or evil thought; no sorrow, no fear. All mankind could attain to supreme blessedness.
Treta Yuga is the second out of four yugas, or ages of mankind. The Dharma bull, which symbolises morality, stood on three legs during this period. It had all four in the Satya Yuga and two in the later Dvapara Yuga. Currently, in the immoral age of Kali, it stands on one leg.
Dwapar Yuga is the third out of four yugas, or ages.Lord Vishnu assumes the colour yellow and the Vedas are categorized into four parts that is Rig, Sama, Yajur and Atharva. During these times the Brahmins are knowledgeable of two, sometimes three Vedas, but rarely have studied all the four Vedas thoroughly.
Kali Yuga is the last of the four stages the world goes through as part of the cycle of yugas. Kali Yuga is associated with the apocalyptic demon Kali. The “Kali” of Kali Yuga means “strife, discord, quarrel, or contention.”
The Legends are described in the Major Puranas, playing important part in the ages above. Lets Go through them.