Three of the most common ancient Greek and Roman architectural features that we see today are columns, domes, and arches. On a side note, the Romans were also responsible for the widespread use of concrete because they discovered it was stronger than the commonly used marble and could be shaped instead of needing to be carved.
Hunting wild animals is what they did
D because the Greeks did believe the gods would determine their fate. They thought if they did something wrong or disobeyed the gods, the gods would punish them, and now days we have myths saying some of the things they would believe.
Mostly it was exhaustion, lack of supplies, new diseases (and old disease that became more common.) Also cold weather, bandits, and oxen dying on the trip.