 
 <prompt> Wetin be di second time period wey dem mention? Based on di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: The Roman Empire bin reach im biggest size during the 2nd century AD; the next two centuries see as Roman control over their far territories dey reduce. Economic wahala, wey include inflation, and pressure from outside for the frontiers join hand to make the 3rd century dey politically shaky, with emperors wey dey throne dey change quick quick as new people dey claim am. Military expenses dey increase steadily during the 3rd century, mainly because of the war with Sassanid Persia, wey start again for the middle of the 3rd century. The army double in size, and cavalry and smaller units replace the legion as the main tactical unit. The need for money make dem increase taxes and the number of the curial, wey be landowners, dey reduce, and the number of people wey dey ready to hold office for their towns dey reduce. More bureaucrats dey needed for the central administration to handle the army needs, wey make civilians dey complain say the number of tax collectors for the empire pass the number of tax payers. 