I think that the Answer: is a
Explanation:
Genghis Khan forged alliances with other clans,
C. Congress could only change the amendments regarding slavery with the unanimous approval from all the states
Some define a trapezoid as a quadrilateral having only one pair of parallel sides (the exclusive definition), thereby excluding parallelograms. ... Under the inclusive definition, all parallelograms (including rhombuses, rectangles and squares) are trapezoids.
