YOU SAID:

Have sent a dozen sequent messengers

INTO JAPANESE

数十の後続の使者を送りました

BACK INTO ENGLISH

sent dozens of subsequent emissaries

INTO JAPANESE

その後何十人もの使者を送りました

BACK INTO ENGLISH

Then sent dozens of messengers

INTO JAPANESE

それから何十人もの使者を送った

BACK INTO ENGLISH

Then sent dozens of messengers