Answer:
California trail
Step-by-step explanation:
The rout from Missouri river towns to California.
Immigrants to the old west used this trail as an alternative to rail and sea transport.
The immigrants were immigrating into the old west due to different reasons among them being:
- Religious persecution escape
- Greener pastures in economy
And many other reasons.
This was not the only trail use, it is just a trail among the emigrant trails.