What was the primary body of water used for travel and trade in the hellenistic era

The correct answer is - Mediterranean Sea.

During the Hellenistic era, the most important and busiest body of water was the Mediterranean Sea. This was due to the location of it, because it was a sea on which shores where the biggest and greatest civilizations at the time.

The civilizations in the Mediterranean region were all using it for multiple purposes, trading, military actions, exploration, fishing, for communication... This led to an extensive usage of the sea from a very early point in the human history, and that has continued over the centuries.

zoom in on the bill of rights. the other side was just as divided: some antifederalists opposed the constitution only because it lacked a bill of rights, and others opposed it on other grounds and merely used the bill of rights as an excuse to campaign against it.