During the age of discovery what was a common reason rulers sent explorers to unknown lands?

they wanted to expand their power in the world

Explanation:

The correct answer to this open question is the following.

I am going to explore the environmental issues/attitudes that I see in the media, taking the case of the film "An Inconvenient Truth," produced by former Democratic candidate to the presidency of the United States, Al Gore.

The film, released in 2006, tries to create conscience about the difficult topic of the damage that humans are inflicting on the environment and how mother Earth tends to react when so much noise, air, and water pollution abounds on the planet. The central topic is global warming, and the film presents testimonials and statistics about the increasing pollution levels in most parts of the earth and the damage industries and means of transportation causes the planet due to carbon dioxide.

Other pieces of literature support these concerns, meanwhile, the Bible warned of the kind of destruction that was created in the past if we sin and do not respect nature as a creation of God.