Which leg of triangular trade was called the "middle passage"
a. north america to europe
b. africa to north america
c. europe to africa
d. africa to europe

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.

very positive impact on our industries in the west, sine they promoted settlement and increased the ways in which goods could be transported to market.  

woah dude who's thia? need more info