This question is incomplete. The question refers to the image "Mary of Béarn swears homage to Alfonso II of Aragon, promising not to marry without his consent." In this image, we see that Mary of Béarn is fulfilling a duty that she believed her king is owed. This is because the king is considered to be the absolute ruler of everyone. Therefore, she owes him allegiance and respect.
The options that come with this question are:
Manoralism
Feudalism
Chivalry
Serfdom
This picture best depicts the political system of feudalism. In this picture, we see that the Countess of Bearn considers asking Alfonso II to be absolutely necessary before making the choice of choosing a spouse. This is representative of the relationships that the nobility had with the King. The King was considered all-powerful and wise, which meant that only he could make such a decision.
Control of the Bosporus and Dardanelles straits was a strategic objective in both World War I and World War II because these straits provide access from the Black Sea to the Mediterranean Sea