 
 <prompt> "Wetin be di opposite of losses? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context:" <response>: One disadvantage of the phalanx na say e dey effective only when dem dey fight for large, open spaces, wey leave the Romans for disadvantage when dem dey fight for the hilly terrain of central Italian peninsula. For the 4th century BC, the Romans comot from using phalanx and begin use the more flexible manipular formation. This change sometimes dey linked to Marcus Furius Camillus and e happen shortly after the Gallic invasion of 390 BC; but e dey more likely say dem copy am from Rome's Samnite enemies for south, possibly as a result of Samnite victories during the Second Samnite War (326 to 304 BC). 