I think that the oldest department in the executive branch is the United States federal executive departments
Spanish conquering Mexico
Effect: Death of 2 continents. Deconstruction of thriving civilisations. 2 brand new continents for Europeans to put to use.
Cause: The Spaniards wondering if the Earth is actually round. During the journey the stumble upon the New World. Another cause is the greed and disrespect of the Spanish colonizers. The American natives were seen as primitive and savage, which the Spanish saw as a reason/excuse for killing their cities, people and culture.
The Spanish were among the first Europeans to explore the New World and the first to settle in what is now the United States<span>. By 1650, however, </span>England<span> had established a dominant presence on the Atlantic coast. The first colony was founded at Jamestown, Virginia, in 1607.</span>
The theory of natural selection was explored by 19th-century naturalist Charles Darwin. Natural selection explains how the genetic traits of a species may change over time. This may lead to speciation, the formation of a distinct new species.