<prompt> Translate the following text to EnglishWalibadilisha majumba ya zamani madogo juu ya ardhi ya juu, yaliyohifadhiwa tu na ngome za mbao, na ngome kubwa za kati, nje ya safu nyuma ya mitaro pana, kuzungukwa na kuta za mawe na kazi za udongo zenye nguvu za kutosha kukabiliana na moto wa bunduki.  <response>: They replaced the old small castles on high ground protected only by wooden stockades with large central fortresses out of range behind broad moats, surrounded by solid stone ramparts and earthworks strong enough to resist cannon fire. 