Iwill reward brainiest answer :asa

which statement about the sui dynasty is correct?

a: it's first ruler was wendi, who unified northern china and seized control of western regions
b: it dismantled large portions of great wall to obtain building materials for a network of canals.
d: it was the last chinese dynasty to have its imperial capitol located at northern city of chang'an

1. discovered the new world balboa 2. explored the north american southwest hudson 3. his crew was the first to sail around the world vespucci 4. conquered the incas of peru cortes 5. discovered the pacific ocean columbus 6. conquered the aztecs of mexico cabot 7. discovered fishing grounds off newfoundland pizarro 8. looted spanish vessels for england drake 9. claimed the hudson river area for dutch coronado 10. priest who explored the mississippi marquette 11. man for whom the new world is named magellan