How did the US use of railroads affect the rest of the world? PLZ HELP ME I WILL GIVE BRAINLIEST

In addition to transporting western food crops and raw materials to East Coast markets and manufactured goods from East Coast cities to the West Coast, the railroad also facilitated international trade. The first freight train to travel eastward from California carried a load of Japanese tea.

Explanation:

It might be said that the warming climate affected the paleo- Indians by allowing people to grow more plants and have a better gardening food quality. On the other hand, it helped fishing as fish were more abundant. The quality of food and the amount of fish, plus the remaining lands to be used are the main factors that impacted on the people leaving in the Americans at that time.