Answer:
peninsulas, islands, and mountains.
Step-by-step explanation:
All of these helped Greece became one of the most developed society at tis time.
The peninsula and island granted Greece with vast access to Sea travel routes. This made it easier for traders from other nations to come by and traded with the Greeks. This allow their economy to flourish and their culture to be spread to other nation.
Their mountains served as a natural defense that protect them from enemies attack. If enemies wanted To attack Greeks, the enemy couldn't bring large war equipment since they wouldn't be able to pass the mountain while carrying such heavy objects.