一个城市国家的独特特征使其与其他类型的政府区别开来是其主权或独立性。这意味着一个城邦国家拥有管理自己和公民的充分权利和权力，不受外部政府的任何干涉。例如，摩纳哥城邦政府虽然完全位于法国境内，但不受法国法律或政策的约束。通过拥有主权，城邦与其他形式的政府机构（如“自治区”或地区）不同。虽然自治区是中央国家政府的功能性政治分支，但它们保留了与中央政府不同程度的自治或自治。中华民国和英国北爱尔兰的香港和澳门是自治区的例子。与罗马和雅典这样古老的城邦不同，它们的强大程度足以征服和吞并它们周围的大片土地，现代城邦在土地面积上仍然很小。
加拿大政治学Essay代写：自治区
The unique characteristics of a city state distinguish it from other types of government as its sovereignty or independence. This means that a city-state has the full power and power to manage itself and its citizens, without any interference from outside governments. For example, the Monaco city-state government, although wholly located in France, is not subject to French law or policy. By owning sovereignty, city-states are different from other forms of government agencies (such as “autonomous regions” or regions). Although the autonomous regions are functional political branches of the central government, they retain different degrees of autonomy or autonomy with the central government. The Republic of China and Hong Kong and Macao in Northern Ireland are examples of autonomous regions. Unlike ancient city-states such as Rome and Athens, they are strong enough to conquer and annex large areas of land around them, and modern city-states are still small on land.