What replaced wood as the main source of power for locomotives?

Explain the importance of president harry truman's order to integrate the u.s. military and the federal government.

What is political gerrymandering, what does is accomplish, and why might legislators use this tactic in redistricting

How are the perspectives presented in the excerpts similar? they show the disappointment and fear mission control workers feel when the lunar module develops problems. they show the huge investment of time and energy mission control workers dedicated to the lunar module. they show how mission control workers view the lunar module as if it is the workers' very own child. they show the relief and excitement mission control workers feel when the lunar module lands on the moon.