Which exploration did king ferdinand and queen isabella of spain sponsor? a. bartolomeu dias's voyage around the cape of good hope. b. christopher columbus's voyage to hispaniola c. gil eannes's voyage around cape bojador d. jacques cartier's voyage up the st. lawrence river e. john cabot's voyage to canada

Consider the following invention from the american industrial era. cotton gin – a machine that removed seeds from short-staple cotton which option explains how this invention contributed to the role of the united states as an emerging world power? a. it was in high demand abroad, as many european nations had begun farming cotton. b. it led to the decline of slavery in the south, which enhanced america’s international reputation. c. it freed up many slaves to become factory workers in northern cities, which improved the economy. d. it increased production efficiency of a us cash crop that was in high demand in other nations.