The trail lines on the map above represent the trails taken by pioneers migrating to the west. what was the likely effect of these trails on the western regions

The likely effect of such trail lines that were left by pioneers migrating to the west were that people who moved there afterrwards were able to derive information regarding where it was relatively safe and where territory has been charted and mapped before. This enabled a little certainty in areas of great danger. 

“according to some school, two answers might be : the rise of vcrs or an end to television” i hope this you for what your looking for

Fine until slavery ya ya haha