How did the europeans colonization of the americas end up affecting the populations of three different continents?

Based on this graph, it is reasonable to assume that by 1930 the percentage of the population with the right to vote was

50 do you think civilian (nonmilitary) control of the military is an important part of u.s. democracy? why or why not? what are the advantages to this system? are there disadvantages?

President of the united states has scheduled a cabinet meeting today to discuss energy policy with specific focus on pollution and global warming. given what you know of the executive branch, which group of attendees would the president most likely expect to provide up-to-date information and expert insight during this meeting?