I don’t know what are the answers choices but I believe Rwanda.
The fundamental modernization of ribbed groin vaults in Gothic cathedrals was to accommodate stained glass window. The ribbed groin vault is the connection of two or three barrel vaults yields a rib vault or ribbed vault when they are bordered with an armature of piped masonry often engraved in decorative patterns and associate groin vault is an older custom of vault structure.
Abraham Lincoln (February 12, 1809 – April 15, 1865) was an American politician. He was the 16th President of the United States. He was president from 1861 to 1865, during the American Civil War. Just five days after most of the Confederate forces had surrendered and the war was ending, John Wilkes Booth assassinated Lincoln. Lincoln was the first president of the United States to be assassinated. Lincoln has been remembered as the "Great Emancipator" because he worked to end slavery in the United States.[1]
Nationalism is an idea and movement that holds that the nation should be congruent with the state. As a movement, nationalism tends to promote the interests of a particular nation (as in a group of people), especially with the aim of gaining and maintaining the nation's sovereignty (self-governance) over its homeland.