Final answer:
Mercury experienced crustal compression, resulting in the formation of scarps on its surface. Mars might have also experienced crustal compression, leading to the formation of sharp and small cliffs.
Step-by-step explanation:
Evidence suggests that Mercury experienced a phenomenon called crustal compression. This compression caused the planet's crust to wrinkle and form long, curved cliffs called scarps. These scarps were formed after most of the craters on Mercury's surface had already formed.
On Mars, the newly discovered sharp and small cliffs are believed to have formed from the slight compression of the planet's crust, similar to what happened on Mercury. These cliffs indicate that Mars might have also experienced crustal compression in its history.