Mexican immigrants is your answer.
Midwestern farmers traveling to Southwest America would be entering into Mexico (before the Mexican-American War), which included present-day Texas stretching to present-day California.
hope this helps
Answer:
Celtic people
Explanation:
When the Romans arrived in Britain and conquered big portion of it, they encountered the Celtic people. The Romans were very familiar with the Celtic people, as they lived in northern Italy, as well as most of Western Europe. The Celtic people in Britain had multiple similarities with the continental Celts, but also had their own unique traits, both physical and cultural. While the Celtic tribes were the dominant force in Britain, it has to be mentioned that there were also lot of Native British people, or rather big portion of them had accepted the Celtic culture. In the northern part of the island though, there were the Picts (still people of unknown origin) which were never conquered and were the reason for the building of Hadrian Wall.
The main reason was because of over population in a small confined area. They also moved father out west so they could get more materials or supplies.
You didn't put the cartoon in