<span>Motives for Exploration - Wealth and Religion. The motives for Spanish, French and English explorers were all different, although in some ways, they were the same. They all wanted to find the Northwest Passage, which they believed was a direct and efficient route to the Orient - home of spices, silks and wealth.</span>
They conquered Greece, because at the time Macedonia was ruled by Alexander the Great (and before him his father) who became a major figure in history as he has conquered vast areas from Greece to modern day parts of middle East and even Asia.
Because Alexander had a strong military background and was able to conquer Greece (which was only the start) with relative ease, he further expanded his empire during his lifetime. He did all of this at a relatively young age because he died at the age of around 35 or so.
To free slaves (colored people)
That were one of the first acts like the Boston tea party act