1) The word "pencil" contains two vowels: E and I.

2) The Treaty of Tordesillas, signed in 1494, divided the newly discovered lands outside of Europe between Spain and Portugal, leading to the colonization of the Americas.

3) The concept of compound interest can be attributed to the ancient Babylonians, who used it in their banking practices.

4) Cyclones play a vital role in Earth's climate system by redistributing heat and moisture, maintaining global temperature patterns, and influencing weather patterns.