In the period circa 1200–1450, scientific and technological advances in Afro-Eurasia occurred both through new discoveries and through diffusion across cultures in areas of increased interconnections, such as the Silk Roads and the Mediterranean.

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so. 

i believe the correct answer is b.

where is the subject? hahahaha