O It helped Britain maintain its vital supply lines.
Explanation:
As Europe countries was continuously threatened by Axis power of Germany, Japan and Italy, Roosevelt proposed a solution that would help the embattled Britain and strengthen the United States’ defenses against any future threats: the Sept. 2, 1940 Destroyers for Bases Agreement.
Bound by the Neutrality Acts, Roosevelt suggested a trade: air and naval bases within Great Britain’s colonies for 50 of the Navy’s over-aged destroyers. He could justify the swap because outlying bases would keep invaders from reaching America’s shores.
