The increase in the trade of silver during the period between 1550 and 1800 is due to the fact that silver was started to be used as a standard currency for trade purposes. Even though it was not considered as "legal tender", as it would later be used for this purpose with the introduction "Bimetallism" in the 19th century, it was widely adopted as a tool for trade among the civilizations that existed at the time.
Answer: Gompers helped found the Federation of Organized Trades and Labor Unions in 1881 as a coalition of like-minded unions. In 1886 it was reorganized into the American Federation of Labor, with Gompers as its president. With the exception of one year, 1895, he would remain president of the organization until his death.
According to the passage, the possible trade-offs for consumers in return for reduced pollution, are that sport utility vehicles and pickup trucks will be forced to meet stricter standards as passenger cars for the first time meaning that the purchase cost of those vehicles would increase, as well as the fact that all gasoline prices will be increased. This means that for the consumers, the price point to run a car or purchase a sports vehicle or pickup truck will be increased.
