How did european nations' colonies to boost the economy and increase wealth? : )

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

Which sequence of transformations on preimage ∆abc will not produce the image ∆a'b'c'? a. reflection across the line y = x b. rotation 180° clockwise about the origin followed by a reflection across the line y = -x c. reflection across the x-axis followed by a reflection across the y-axis d. reflection across the line y = -x followed by a rotation 180° counterclockwise about the origin e. reflection across the y-axis followed by a rotation 90° clockwise about the origin

True/false indicate whether the sentence or statement is true or false. southern africa experiences droughts and floods. select the best answer from the choices provided t f