Alfred Crosby's ecological imperialism describes the expansion of Europeans across the world. Crosby explains the relationship between European organisms and the conquest of non-native lands, diseases, flora, fauna and animals all play a role in the rapid expansion of people from Europe to the New Worlds. Europeans' outward expansion was traditionally thought to be due to their technological superiority, weapons, or even religion. Although these gave them great advantages, it was what they brought with them that sealed the fate of millions of natives, plants and animals. The advantages that Europeans had were partly due to their origin. The breakup of Pangea and continental drift ensured that regions of the globe would be isolated and have relatively small populations. From the breakup of Pangea until Europeans began sailing across the world's oceans, the Americas and Australia developed in complete isolation. Europeans and their Eurasian counterparts also experienced their Neolithic revolution long before the indigenous peoples of the New World. And as Crosby says: “Native Americans and Aborigines came late to the full Neolithic revolution, for various reasons, and they suffered as a result. » This late departure put them at a serious disadvantage when the white explorers finally arrived. The Neolithic Revolution, although fantastical, did one thing that would change the course of history, at its heart it was the domination of humans over everything else. As the author explains: "The Neolithic revolution of the Old World, for all its dazzling advantages in metallurgy, the arts, writing, politics, and urban life, was at its core a question of control and direct exploitation of many species for the s... ... middle of paper ...... ngaea in search of more resources and wealth. The divergent landscapes caused by the breakup of Pangea were then homogenized by the plants and animals brought with these new explorers. Crosby goes into great detail, often overabundant, about how and why this spread occurred, and where it was successful and where it was not. He makes a clear distinction between colonization and assimilation, colonization in more temperate zones and assimilation in more hostile climates such as the tropics. Sometimes those who seek to conquer are often defeated by the same pathogens that have ensured their success in other parts of the globe. Throughout human history, we often forget that although we are the architects of a plan, it is often those little things, like pathogens, that are the cause of our successes and failures...