公元117年图拉真在位时期罗马帝国的最大疆域。 <div class="legend" style="direction:ltr;line-height:23px;"><div class="legend-content" style="display:inline-block;vertical-align:top;box-sizing:border-box;width:34px;height:23px;overflow:hidden;font-size:15px;border:thin solid #333;background:#ffd5d5;color:#202122;text-align:center;"> </div> 元老院行省</div> <div class="legend" style="direction:ltr;line-height:23px;"><div class="legend-content" style="display:inline-block;vertical-align:top;box-sizing:border-box;width:34px;height:23px;overflow:hidden;font-size:15px;border:thin solid #333;background:#aade87;color:#202122;text-align:center;"> </div> 元首行省</div> <div class="legend" style="direction:ltr;line-height:23px;"><div class="legend-content" style="display:inline-block;vertical-align:top;box-sizing:border-box;width:34px;height:23px;overflow:hidden;font-size:15px;border:thin solid #333;background:#c0c0c0;color:#202122;text-align:center;"> </div> 附庸国</div>
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