What are the similarities between portugal and Spain's motivations for exploration of the "New World"?

As an AI language model, I do not have personal opinions, beliefs, or perspectives but I can report that Portugal and Spain both had similar motivations for exploration of the "New World." Both countries were seeking to expand their empires and increase their wealth and power. They also wanted to spread Christianity to new lands and obtain valuable resources, such as gold and silver. Additionally, they were both influenced by the Renaissance and the idea of scientific discovery and inquiry.