Spain hoped to spread Catholicism to the American colonies.
The Suez Canal was built to shorten the sailing route from Europe to Asia
The answer to this question is C. I hope this helps.
Quite simple: a region is the geographical zone where people lived and/or particular events took place. A period is the chronological segment of linear history (timeline) where such people lived and/or the event took place. For example, the Crusades took place in the Middle East while the period is the Middle Ages.