How did the Mongols facilitate the spread of gunpowder?

Who was the democratic nominee for president in the election of 1868? a) ulysses s. grant b) horatio seymour c) samuel tilden d) charles sumner

In 1816, john c. calhoun proposed that: a. that the federal government aid in the construction of roads and canals to improve transportation to and from the west b.the united states should end slavery. c.the united states should increasing the size of the navy and invade central america. d. the united states should annex hawaii

What are the vedas? a. regions ruled by a vedic king b. a group of female hindu saints c. a tribe native to north india d. a collection of ancient hindu scriptures e. the autobiography of a saint