Adolf Hitler was a dictator, and so is Fidel Castro.
1. a centralist is a latin American politicians who favored strong, centralized national governments with broad powers
& a federalist is a Latin American politicians who wanted tax and commercial policies to be set by regional government, rather than a centralized government
2. centralists are conservative politicians & federalists are liberal politicians
The correct answer for the question that is being presented above is this one: "Thomas Edison." Thomas Edison improved the incandescent light bulb and he made it possible to quit using oil lamps as a source of light, which sometimes unsafe.
if only person was in charge of a government, it would gradually convert into a dictatorship, simply because there are no other branches of the government to keep the executive government in check. This is why governments have three branches, to make sure power is balanced. Two branches and even four branches wouldn't work because of uneven balances in power.