William Smith
Actually, there are six early civilizations that arose independently: Egypt, Mesopotamia, the Indus Valley, China, Mesoamerica, and the west coast of South America.
There are some commonalities to them. Four of the six—Egypt, China, Mesopotamia, Indus—centered on large river basins. The Olmec civilization, the earliest Mesoamerican civilization, arose in an area with multiple rivers. The Norte Chico, the earliest Peruvian civilization, centered on the Fortalenza, the Pativilca, and the Supe rivers on the coastal plain. All had generally temperate to warm climates—the furthest north is China—that encouraged the development of agriculture on a large enough scale to support an increased population, after which follows settlements and some form of centralized government.
Europe had large rivers, but a colder climate. That is probably the biggest reason why civilization did not first develop there. Civilization in the Mediterranean basin spread from Egypt and Mesopotamia around the entire basin before penetrating further.

实际上,存在六个独立兴起的早期文明:埃及、美索不达米亚、印度河流域、中国、中美洲和南美洲西海岸。它们有一些共同之处。其中四个——埃及、中国、美索不达米亚、印度河流域——都以大河流域为中心。最早的中美洲文明奥尔梅克文明产生在一个有多条河流的地区。最早的秘鲁文明小北文明则以福塔莱萨、帕蒂维尔卡和苏佩三条河流为中心,位于沿海平原上。它们的气候通常温和到温暖,中国是最北端的,这种气候有助于发展规模足够大以支持人口增长的农业,随后形成定居点和某种形式的中央集权政府。
欧洲拥有大河流,但气候较寒冷。这可能是为什么文明没有首先在那里发展的最主要原因。地中海盆地的文明是从埃及和美索不达米亚向整个盆地扩散,然后才进一步渗透的。