God has created the world as one

 "God has created the world as one—the boundaries are marked out by man. God has not divided the lands, but each man has his house and meadow; horses and dogs do not divide the fields into parts. That is why Bahá’u’lláh says: “Let not a man glory in that he loves his country, but that he loves his kind.”
All are of one family, one race; all are human beings. Differences as to the partition of lands should not be the cause of separation among the people.

Abdu’l-Bahá in London