It was probably written about B.C.900 or B.C.1000.

In this view agree Wilson, Lassen, Max Mueller, and Saint-Martin.

The Supreme Deity is now Brahma, and sacrifice is still the act by which one comes into relation with heaven.

Widow-burning is not mentioned in Manu; but it appears in the Mahabharata, one of the great epics, which is therefore later.
In the region of the Sarasvati, a holy river, which formerly emptied into the Indus, but is now lost in a desert, the Aryan race of India was transformed from nomads into a stable community.[48] There they received their laws, and there their first cities were erected.

There were founded the Solar and Lunar monarchies.
The Manu of the Vedas and he of the Brahmans are very different persons.
The first is called in the Vedas the father of mankind.