How could the movement of tectonic plates create another supercontinent like pangea?

The plates are moving and have been for billions of years... they collide and they rip apart. ... The plates carry the continents on their "backs"; if two plates -each with a continent- collide, then a supercontinent can be created.

Explanation: hope this helps

answer; i believe the correct answer is (fluctuated);

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.