New technology played a huge role in shaping the economy of the 1920s. Technology, such as the radio, were common because of mass culture, so people bought radios. Also, the car completely changed the way americans went about their daily lives. Cars created the largest industry in the US - $800 million. Cars helped create the self-perpetuating cycle of money/jobs (Standardized mass productions led to: Better machinery in factories led to: Higher production and higher wages led to: More demand for consumer goods led to: More standardized mass production). Cars also created a new market for credit. New technology helped the economy boom, and created the "golden age".
The answer is B solar power in Ireland
What plans? There’s nothing here.
Perry help the United States expand its influence in Asia as he negotiated the first treaty between the United States and Japan (Kanagawa Treaty).
The Kanagawa Treaty was signed on March 31, 1854 between Commodore Matthew Perry of the United States and the authorities of Japan, in the Japanese port of Shimoda. This treaty ended with 251 years of Japan's isolation and, at the same time, with its policy of exclusion (Sakoku), thus opening the Japanese ports of Shimoda and Hakodate to trade with the United States, guaranteeing the safety of American shipwrecks and establishing a permanent consul.