1. What are the two sources of melting at convergent plate boundaries? 2. Why are there so many volcanoes around the Pacific Ocean basin?
3. What causes melting at divergent plate boundaries?

1. when the temperature rises and if water is added, which lowers the melting point.

2. Most of the Earth's volcanoes are located around the Pacific Ring of Fire because that the location of most of the Earth's subduction zones.

3. At divergent plate boundaries hot mantle rock rises into the space where the plates are moving apart. ... The rock is under lower pressure; this lowers the melting temperature of the rock and so it melts.

Explanation:

I hope this helps you. Good Luck :) :) :) :)

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.

i think it would be cleaveland browns