Answer:
Lord Dalhousie
Explanation:
The doctrine of lapse was an annexation policy purportedly devised by Lord Dalhousie, who was the Governor General for the East India Company in India between 1848 and 1856.
Declare war, appoint military officers, and sign treaties are just a few of them.
Should be Mekong, because nations like Thailand, Vietnam all have the Mekong running through it
Aristotle is remembered for his contributions to the field of philosophy and science during the Hellenistic era.
One of the biggest contributions made by Aristotle was the way in which he researched an issue. His advice to study books/research done on topics, to perform independent studies, and to gain a sense of the general consensus on a topic are the foundation of what would later become the scientific method.
So it's B