The answer is A. The attack on pearl harbor
The Patriot victory at Saratoga<span> is often seen as the </span>turning point<span> in the </span>war<span>. Not only did it renew the morale of the American public, but it convinced potential foreign partners, such as France, that American could win the </span>war<span>, and that it might be in their best interests to send aid.</span>