How does the letter from boston evening transcript show that racism existed in the north

Because the letter argues that black people are not ready to rule themselves.

Explanation:

The letter you are asking about was published in 1873. Its content can be sum up as the personal opinion of a white supremacist, someone who believed that black people couldn't rule themselves because they were propense to violence, moral ambiguity, and their lack of education. According to the letter, it was necessary that a new generation of black people would emerge to obtain the rights to rule something, but they had to pass for probation (a test), to see their predisposition. Even so, according to this person, they would fail.

¡Traduce del inglés al español! También lamento haber entendido mal la pregunta. En mi escuela secundaria y no estamos aprendiendo eso.

The Holocene period, which began 11,700 years ago following the last big ice age, is the official name for the 'age' we are currently in. All periodization methods are more or less arbitrary to the extent that history is continuous and not generalized. Past time would be nothing more than a jumble of events without a framework to help us understand them if there were no defined periods, no matter how clumsy or imprecise they were. Nations, nations, families, and even individuals are continuously imposing overlapping schemes of historical periodization, each with their own remembered history.