In this quote, de Las Casas refers to Admiral as a criminal and oppressor.
Explanation:
The passage shows that Admiral, in his ambition to please the king, criminally oppressed the Indians, becoming a criminal, as well as an oppressor, and causing suffering to the natives in the name of a possible "admiration" of the monarch, and thus like those who came before him, he did not see that he was behaving exactly like the others, promoting nothing that would make him stand out in the eyes of the king and causing suffering in vain.
Britain, who was at the war with France again, would seize American ships and force Americans sailors to join the British Navy (impressment). The U.S. declared war on Britain in 1812 because Britain refused to stop seizing American ships that traded with France.
