Many countries had banned or boycotted South Africa to protest the Apartheid that was happening there. Hope this helps.
Mahan's influence on strategy
Captain, later Rear-Admiral, Alfred Thayer Mahan (1840–1914) was an American naval officer and historian. Influenced by Jomini's principles of strategy, he argued that in the coming wars, control of the sea would grant the power to control the trade and resources needed to wage war.
It would be A. Today, Japan is a big ally.
Both Abraham Lincoln and Jefferson Davis had to deal with contentious congresses with often clashing interests and agendas. In Davis’ case the discord was intrinsic in the very “States’ Rights” concept behind the Confederacy, though in practice Lincoln had plenty of cat herding of his own to do. Lincoln was arguably the more successful president in having better political instincts, which became more evident as he grew into his presidency—a talent for knowing when and how to cajole, horse-trade, bribe outright or ruthlessly assert his power, depending on who he was dealing with.
The answer is D) opportunity to negotiate a lower par value to offset the lower interest.