Why did the european powers create colonies in the americas?

How did the europeans design the national borders of africa? why?

What's erosion? a. the breakdown of rock into smaller pieces b. the removal of weathered products from rock c. a change in rock resulting from exposure to water d. a chemical change in rock that weakens it

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .