The transatlantic slave trade was really a triangle. Here's a map to show the approximate routes. The trade was brought about to benefit the economy of Caribbean nations and Europe. The slaves were forced into awful conditions; cramped boats and harsh climates with which to toil away picking cotton or whatnot.
It would be "China" that is currently privatizing by transferring ownership from the public sector to the private sector, since although China remains a communist country, it understands well the benefits of a certain amount of capitalism.
They investigated the incident of Watergate very heavily.
This was very problematic, as it seemed that Nixon was spying on other campaigns. The Watergate scandal marked an abuse of power, so it was important that Congress investigated this and kept his power in check
