The Transatlantic Slave Trade was a trading pattern that most European Powers at the time followed to maximize profits from the exploits of the New World. These powers found that they could cultivate cash crops like sugar and mine for valuable minerals in South America and the Caribbean. These jobs were labor intensive and required a lot of people to do so. Natives weren’t reliable since they died easily of Europeans diseases. Europeans found an easy labor force and traded other goods with tribes for men who were taken on the Middle Passage and to such locations to work.
The Roosevelt Corollary was an idea by president Theodore Roosevelt that was based on the Monroe Doctrine. Basically, it established that the United States would be like a police force that would meddle in Latin American politics in order to prevent escalation or support a side in a war or something similar, instead of having Europe meddle in their affairs.
Born September 15, 1254. Venice, Italy.
Died January 8, 1324 in Venice, Italy.
Despite not providing the picture, there is enough information in the question to understand that the correct answer is alternative A) "At least 500 Million Years"
If the fossilized being lived around 500 million years ago, it means that the rock must be at least about that age.
Alternatives B and C are inconclusive, since the rock might have formed before, and with the information presented it's impossible to tell it's exact age. We can only tell that it's at least 500 million years old because of the fossil of a specimen that lived about 500 million years ago.
Missouri and Maine were the 2 new states.... Maine became a free state, and Missouri became a slave state.... the Compromise of 1820 is also known as the Missouri Compromise