Answer:
The "Mother Race" is from Ethiopia. It is evidently mentioned in the poem's third stanza that the children are from Ethiopia (Proud Ethiope's swarthy children stand). It was also mentioned in the first stanza that the place was crushed with "slavery." Ethiopia is known for having slavery in the past and it was only abolished during the 1930s.
Step-by-step explanation:
"Ode to Ethiopia" is a poem written by Paul Dunbar in 1896. It presents the African-American slavery happening in Ethiopia and the "hope" that people should have on their country's freedom in the future.