What happens when the wind changes direction?

Does this help?

Explanation:

The air flows cyclonically around low pressure systems. If the wind changes direction in a cyclonic fashion it often means a low pressure or front is influencing the forecast area. A wind shifting from the south often means warmer air is approaching and a wind from the north often means cooler air is approaching.

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.