What is not true about the War Production Board (WPB)?

How did the completion of the transcontinental railroad change the lives of american citizens? a-it increased the wealth of all americans and enabled them to travel more.b-it made cross-country travel too expensive for ordinary americans.c-it decreased the safety of americans who moved to settle the plains.d-it shortened travel time between the east and west for all americans.

What ways did native americans influence the lives of european settlers in early america ?

Based on the information given and the gauges which process or processes have their alarm light on?