Canada has taken an international role in a policy of
a. weapons reduction
b. environmental protection
c. alternative energy
d. immigration control

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

The causes of the failure of the league of nations

All of the following occurred due to the invention of the railroad except