1. The similarity that all of those 3 had is that they wanted undertake colonization through the agency of chartered companies.
2. My best guess is C.
D? Nope, out of topic. A? Only of Florida, no. B? kind of, not really though.
The nation needed workers so they could make money and slaves were the answer
The answer is 1901 AD - 2000 AD
President Harding? or Martin Luther King Jr?