Which group of people is believed to have invented gunpowder?

a. Europeans

b. Native Americans

c. the Israelites

d. the Chinese

Im pretty sure its the chinese but let me go back in my book ok?

D. The Chinese because Gunpowder was invented in the 9th century in China, and the earliest record of a written formula for gunpowder appears in the 11th century Song dynasty text, Wujing Zongyao. This discovery led to the inventionof fireworks and the earliest gunpowder weapons in China.