What distinctive feature of the kofun period is the basis for its name?

The word Kofun derived from the type of burial mounds that predicted to be originated from this era.
The most distinctive features of the burial mounds were unlike any others, the mounds from this particular period were key-shaped and associated with many imperial families.

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !