some of it, but it increases the more turns it is blockaded
just check where you are losing income and send over a navy; ive nver had the magnifying glass not work......
depends:
are you getting lots of money from them without raids?
is the trade route to them different than the trade route being raided?
do you have a sufficient navy to protect the trade route from the regular income?
try making peace with the nations currently at war with you; they can be a nuissance.
odds are you are being attacked by pirates. try taking their settlements and killing them off and their navies will die instantly![]()
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