In the late 1400s, most Europeans knew little if anything about the Americas. Columbus made his first voyage in 1492 and even his later voyages resulted in little real knowledge about either North or South America.
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The "new world"
First cattle were brought into the Americas in the late 1400's by the Spanish. In the 1600's, European settlers brought more cattle to the New World. But in all honesty, ranchers have been raising cattle since the late 1400's, which is around 500 years. So, ranchers have been raising cattle in the USA for around 500 years.
From the 16th to the 19th centuries, an estimated 12 million Africans were shipped as slaves to the Americas.
James II of England started white slavery in the Americas. The slaves were taken from Ireland and accounted for the majority of slaves in the Americas during that time period. During the late 1600s, Irish slaves cost less than African slaves.
For Africa and Asia, mainly the 19th century and the first half of the 20th century. Before that period, Europeans had many trading posts there and often wielded a lot of 'informal' influence, but rarely claimed whole countries as the 'posession' of their country. In the Americas colonization started in the 16th century. Most countries there ended their colony status in the late 18th century (the US) or in the course of the 19th century.