How did invasions affect the Kingdom of Kush? They led to a great drop in Kush’s population.
They led to a decline in Kush’s political power.
They led to the loss of Nile River trading posts to Egypt.
They led to the destruction of Kush’s agricultural systems.

They led to a great drop in Kush’s population.

Explanation:

In order to conducted the invasions, The Kush empire have to sacrifice a lot of  men in the battlefield. Not all of these men were soldiers. Some of them were common workers (such as farmers or artisans) that were made to join the battle.

This led to a great drop in Kush's population. They managed to recover it over time during the peace period after the invasions, but it's overall made the kingdom become more vulnerable compared to the period before the invasions.

not  

cuba  

russia  

iraq  

el salvador  

explanation:

known as the land of volcanoes, el salvador has visit seismic tremors and volcanic movement. it is the main nation in central america that does not have a coastline on the caribbean sea. about portion of all salvadorans live in the wide open. they are poor and don't have power or running water in their homes. in 1525, pedro de alvarado, a lieutenant of cortés's, vanquished el salvador. el salvador, with alternate nations of central america, pronounced its freedom from spain on sept. 15, 1821, and was a piece of a league of central american states until the point when that association broke up in 1838.

the answer is solomon northrup. he was a free-born african american, abolitionist and professional violinist that was drugged, kidnapped and sold as slave in 1841 and remained in captivity until 1853 where he regained his freedom with the of the then-governor of new york, washington hunt. he wrote and published his memoirs "twelve years a slave" in 1853, and in this text, he tells the story of his escape thru one of louisiana's swamps (the great pacoudrie swamp) in which he ended up covered in green slime from crossing the surface of the dead water.