In the legendary maritime trade routes of the Great Age of Sail, players can grow stronger by trading goods from different countries. Spain is a popular city in the game, featuring an extremely complex main storyline. Many players might have completed the main quest of the Spanish storyline in the Great Age of Sail. Next, I will reveal some details about how to complete the Spanish main quest.

When completing the Spanish main quest, the player first encounters an unfamiliar soldier. This soldier entrusts you with an important mission, asking you to go to Antwerp and deliver a letter to Agostino. Upon arriving in Antwerp and finding Agostino, you discover that he is very unhappy. Curious, you ask him about the reason for his unhappiness.
After inquiring, it turns out that Bartolome had previously advised the Duke of Alba, but was rejected. At the same time, the Duke of Alba issued an order to suppress the rebels. Bartolome found out that the Duke of Alba did not consider at all the management issues after quelling the rebellion, which made him feel extremely angry.

After some consolation, you hand over the letter to Agostino. To your surprise, the content of the letter makes one feel extremely angry. It turns out that the leader of the Barbary pirates and the Sultan are going to attend a grand ceremony held in Alexandria together. From the actions of Haidreddin, the leader of the Barbary pirates, it's not hard to see that Haidreddin certainly wants to be recognized as the ruler of North Africa by the public during the ceremony.
The pirate group led by Haidreddin is becoming increasingly powerful, and now Bartolome has no power to stand against the Barbary pirates. In order to curb the strength of the pirates, Bartolome decides to take this opportunity to kill Haidreddin.

After reading the contents of the letter, Agostino commissions the protagonist, hoping that you will go to Genoa to purchase a special sniper rifle, the Spiral Groove Rifle, and then deliver the weapon to Bartolome, while also helping Bartolome complete the sniping mission.
On the day of the ceremony, when the protagonist and Bartolome meet, Bartolome hits the target with the sniper rifle. Unexpectedly, after the target is killed, another Haidreddin appears beside him, and the mission ends here.

The main quest in the Spanish chapter of the Great Age of Sail takes quite a long time to complete. Players need a bit more patience when doing the tasks. As long as you follow the summary of the main quest provided, everyone should be able to easily complete the mission.