A because Mexico is where #1 is
The highest density for a sovereign country<span> would be for </span>Ecuador (53.69 people/km^2)
The southern Manifesto was created to counter the Brown vs Board of Education ruiling
Sources such as diaries though not very reliable can be used if there are a large amount of them showing the same date and event. Historical books written about the event especially those closer to the time would be able to help determine that the date is accurate as well.
Answer:
A is the answer hope you get it right
