The face of which man, appeared on the first one dollar bill in 1862?

How did cowboy culture reflect the ethnic diversity of the u. s.

How did roosevelt corollary and dollar diplomacy affect u. s. relations with other countries?

One drawback of voluntary trade is that it a. requires two groups to use a common language b. can make one group dependent upon another for necessary goods c. doesn't occur unless there is a shortage of goods for at least one group d. forces groups to rely on themselves to produce all the goods they need