Answer :
The main reason was that they were not welcomed in Oregon, and because of this, they settled in the neighbouring Washington instead.
Oregon had a number of exclusion laws, which among others, directly prohibited black people from settling down in the state (one of the laws was written down into the constitution, which was still valid in 1920s).
Oregon had a number of exclusion laws, which among others, directly prohibited black people from settling down in the state (one of the laws was written down into the constitution, which was still valid in 1920s).
