The Correct Answer is Ra.
A historian using the historical thinking skill of chronological thinking might to identify historical causation. Historical thinking skill involves identifying, analyzing, and evaluating the relationships among multiple historical causes and effects. They distinguish these events among coincidence, causation, and correlation<span>. He might also be able to identify patterns of continuity and change over time. He can also relate these patterns with a larger historical process or theme.</span>
Challenges that Italy faced after unification.
Following Italy unification in 1861 the nation suffered from economic imbalance between north and south, the absence of education systems, lack of raw materials and the great cost of unification itself. Italy faced this challenges but still made great development progress in the future years.
Answer:
A) Settlers rushed to California to find gold.
Explanation:
In the informational text "The Pony Express", the history of the Pony Express is given. The text follows the events that led to the introduction of the Express and then the eventual developments in relaying long-distance messages.
Among the given events, the first thing that happened was the finding of gold in California and the settlers rushing to that place. This was in 1848, after which came to the start of the Pony Express in 1860. This was followed by the completion of the first telegraph line in 1961 and then, in 1869, the train line to California was finished.
Thus, the correct answer is option A.