<P> The first forms of road transport were horses , oxen carrying goods over tracks that often followed game trails , such as the Natchez Trace . In the Paleolithic Age , humans did not need constructed tracks in open country . The first improved trails would have been at fords , mountain passes and through swamps . The first improvements would have consisted largely of clearing trees and big stones from the path . As commerce increased , the tracks were often flattened or widened to accommodate human and animal traffic . Some of these dirt tracks were developed into fairly extensive networks , allowing communications , trade and governance over wide areas . The Incan Empire in South America and the Iroquois Confederation in North America , neither of which had the wheel , are examples of effective use of such paths . </P>
<P> The first forms of road transport were horses , oxen carrying goods over tracks that often followed game trails , such as the Natchez Trace . In the Paleolithic Age , humans did not need constructed tracks in open country . The first improved trails would have been at fords , mountain passes and through swamps . The first improvements would have consisted largely of clearing trees and big stones from the path . As commerce increased , the tracks were often flattened or widened to accommodate human and animal traffic . Some of these dirt tracks were developed into fairly extensive networks , allowing communications , trade and governance over wide areas . The Incan Empire in South America and the Iroquois Confederation in North America , neither of which had the wheel , are examples of effective use of such paths . </P>
who built some of the first roads in america
who built some of the first roads in america
Iroquois Confederation
Iroquois Confederation