Answer:
electrification, bringing electricity into households
If they did not go in the war their country would parish
I'm pretty sure the answer is D :)
When a star burns through the last of its fuel, the object may collapse, or fall into itself. For smaller stars (those up to about three times the sun's mass), the new core will become a neutron star or a white dwarf. But when a larger star collapses, it continues to compress and creates a stellar black hole.
The first national road was started in Cumberland, Maryland
