Short answers, pulled from the story.
The Roman Empire formally split into a Western and an Eastern one in 395 AD. This division marked the beginning of a distinct identity for the West, which would later crystallize with the rise of Christianity during the Late Roman Empire.
William Warner wrote about the earliest use of the term Western world in the English language in 1586. Modern usage refers to Europe and areas whose populations largely originate from Europe through the Age of Discovery's imperialism.
The Holy Roman Empire dissolved on the 6th of August 1806 after the French Revolution and the creation of the Confederation of the Rhine by Napoleon. This event occurred following centuries of political evolution within the Western world framework.
Before the abolition of its slave trade in 1807, the British Empire alone was responsible for the transportation of 3.5 million African slaves to the Americas. This figure represents a third of all slaves transported across the Atlantic between the 1490s and the 1800s.
Spain did not join NATO until 1982, which was seven years after the death of the authoritarian leader Francisco Franco. The country remained outside the alliance during the Cold War period while other nations like Austria chose neutrality.