What does Otto von Bismarck mean by the statement "From your greeting, I infer a promise for the future..."?

The five tribe’s economy shifted in many ways, which of the following changes is not an example of how they assimilated? a. many tribes began to herd animals and build plantations. b. tribes began to use bartering to trade with others. c. at stores and trading posts, tribes used us currency to trade. d. women began to focus on weaving and spinning to make cloth.

Why was the battle of gaugamela an important turning point in alexanders conquest of persian empire

Here’s the first one let me send the next page of the passage