Arquebus

Arquebus is a technology unique to the Portuguese that can be researched at the Castle in the Imperial Age in Age of Empires II: The African Kingdoms.

This technology allows Portuguese Hand Cannoneers, Bombard Cannons, Cannon Galleons, Bombard Towers and the Organ Gun unique unit to benefit from the accuracy boost of Ballistics.

Strategy
Arquebus is the cornerstone of the Portuguese army in the Imperial Age. Is highly useful if the player favors the use of Hand Cannoneers and Organ Guns due to it increasing the accuracy of those unit at longer ranges. This lets them neutralize incoming melee units more effectively, thus remedying one of their major weaknesses. It also benefits Cannon Galleons, Bombard Cannons and even Bombard Towers making all of them more effective when dealing with moving targets which allows them to defend better a location.