N the sentence "We not only preserve important historic sites within national park boundaries, but also work beyond those boundaries to ensure that everyone's history is saved," the word preserve is a. In the sentence "Whether you want to visit an iconic historical park, discover American stories, or journey through a natural preserve, we hope you discover something new about history during your visit," the word preserve is a

"We not only preserve important historic sites within national park boundaries, but also work beyond those boundaries to ensure that everyone's history is saved."

Preserve here means: to take care of, to make sure nothing happens to it, to keep something safe

"Whether you want to visit an iconic historical park, discover American stories, or journey through a natural preserve, we hope you discover something new about history during your visit."

Preserve here means: a special place in nature, place where nature is protected, including all plants and animals

Explanation:

Preserve has multiple different meanings.