Answer:
He argued in favor of singular or unitary executive.
Step-by-step explanation:
What is Hamilton's main argument in Federalist, no. 70 was that "He argued in favor of singular or unitary executive."
This is evident when he wrote amongst other things that "Those politicians and statesmen who have been the most celebrated for the soundness of their principles and for the justice of their views, have declared in favor of a single Executive...They have with great propriety, considered energy as the most necessary qualification (of the former) and have regarded this as most applicable to power in a single hand..."