Historians gather information from written sources to learn about the past. Sumerians invented the first writing system by drawing pictures on wet clay to stand for words. Pliny the Younger is another important historian who described the eruption of Mount Vesuvius.

because mexico wanted to choose a centralized location

the answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism

payments were made after the 1940s.

in the 1980s, a commission held investigations and made recommendations.