Before revision: However, that notion had been brought up on multiple occasions in the past, and was commonly viewed that such a moved would be ‘regarded, and treated, as a covert renewal of the slave trade’, and based on Galvão’s writing, it seemed he was unaware of the previous considerations.
After revision: However, that notion had been brought up on multiple occasions in the past, and was commonly viewed that such a move would be ‘regarded, and treated, as a covert renewal of the slave trade’, and based on Galvão’s writing, it seemed he was unaware of the previous considerations.