Final answer:
The country represented by the number 2 in the context of Atlantic exploration and colonization of the Americas is Spain. This is inferred from historical facts since the provided question lacks complete context.
Step-by-step explanation:
The question 'What country is represented by the number 2?' seems to be incomplete or missing context to provide a specific answer. However, with the information given that references 'Europe in the Age of Discovery,' I can infer some historical facts that may be related to the query. The country of Spain initiated the era of Atlantic exploration and also established the first colonies in the Americas. Regarding the Protestant Reformation, it began in Northern Europe, not Spain, England, or the American colonies.