This term refers to the history of the interactions among the peoples and empires along the eastern boundaries of north and south america from the 1450s to present day

Atlantic world.

Explanation:

Atlantic world is a term used to talk about the relationships and interactions between America, Africa and Europe from mid of 15th century until today. Despite the facts that the three continents are separated by Atlantic Ocean, they are an integrated system.

The study of Atlantic World includes slave trade, colonialism, revolution, transoceanic commerce, mixing of culture, exchange of knowledge about medicine & geography, development of cash economy etc.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

i believe it would be capitalism