In the nineteenth century, these ethnic groups contributed to the — economic growth and diversity of the Republic
economic growth and diversity of the Republic

establishment of a monarchy
establishment of a monarchy

exodus to northern Europe
exodus to northern Europe

the annexation of Texas to the United States

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.