7 pieces of evidence that prove that the lithosphere is divided into tectonic plates and that the plates are moving.

Modern continents hold clues to their distant past.

Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together.

Fossils tell us when and where plants and animals once existed.

Some life "rode" on diverging plates, became isolated, and evolved into new species.

Explanation:

the first phase of the government’s plan for settlement was building the transcontinental railroad. the railroad provided a way to bring settlers and manufactured goods west and ship their agricultural and mining produce east. the transcontinental railroad was an essential artery for rapid development of the frontier.

the second phase of the government’s plan was a liberal land distribution policy that made it possible for many people to homestead. with these two key elements—transportation and cheap land—the government rapidly achieved its goal of persuading people to move west, settle on farms, and push back the frontier.

doctrine that the us had the right to expand throughout north america.