What two improvements did the portuguese make in shipbuilding?

1. The use of the lateen sail, which is a triangular sail that is mounted on a long yard that is slung diagonally from the mast. This type of sail allowed ships to tack more easily into the wind, which made them more maneuverable.

2. The development of the carrack, which was a large, ocean-going sailing ship that was used for exploration and trade. The carrack was typically equipped with multiple masts and sails, and it had a high, rounded stern.

What civilizations did Rome interact with?

Who were the first people to develop idea of citizenship?

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