What does Queen Elizabeth think about the monarchy?

Had to look for the options and here is my answer. the sui dynasty in china only lasted for about 38 years and what makes this dynasty historical is the unification of the northern and southern dynasties. based on the statements above, the ones that are true regarding this dynasty are the following:
1.    the sui united northern and southern china, but the new empire was too big to  govern effectively.
2.  the grand canal was constructed to unite northern and southern china.
hope this .