Can somebody explain me why an explorer that attacks a building that is under construction deals 1000 damage in 40 secs? when his siege damage is 15?

Age of Empires III: DE Ask for Help
1

thanks in advance, 20 letters

3

i think is 5 times, unfortuntately is not shown on iu

5

does atacking agra forts delays its construction?

7

but delay time to advance age?