The "highly confident letter" was a financing tool created by investment bankers at Drexel Burnham Lambert, dominated by Michael Milken, in the 1980s. Its objective was to enable corporate raiders to launch leveraged buyout (LBO) offers without the debt component of their financing package fully in place.
Corporate raiders used leveraged buyout offers.
A: Yes

The position of South African ambassador to the United States is the most prestigious and top diplomatic post in South Africa. The position was first held in March 1949, following the upgrade of South Africa's diplomatic mission to an embassy. The post has been held by many important politicians and is currently held by M. J. Mahlangu.
M. J. Mahlangu, the current South African ambassador to the United States, is considered to hold a prestigious post by the United States government.
A: It's impossible to say

Princess Ragnhild Coast is the portion of the coast of Queen Maud Land in Antarctica lying between 20 E and the Riiser-Larsen Peninsula, at 34 E. All but the eastern end of the coast is fringed by ice shelves. It was discovered by Capt. Hjalmar Riiser-Larsen and Capt. Nils Larsen in aerial flights from the ship Norvegia on February 16, 1931, and named for Princess Ragnhild of Norway.
Princess Ragnhild had two other places named after her.
A:
It's impossible to say