Which European nation introduced gunpowder and firearms to Japan in approximately 1543?

1830 is the date of

a. the Restoration of the Bourbon monarchy. b. the July Revolution in France. c. the attack on Fort Sumter. d. the Spanish-American War.

What did the lyrics of country rock during the late 2000s focus on?

A. Social commentary B. Traditional American values C. Violence in America D. Black pride