How did american business expand in the 1950's

the indians crossed artificial boundaries, setting the stage for conflict

b) race riots in several cities

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).

your answer will most likely be a.