What is the difference between a primary source and a secondary source

What is the relationship of the letters n. y.l> w. c to the new york infirmary for women and children

How did government policies contribute to the beginning of the industrial revolution in great britain? o a. the british government passed laws that prevented any businesses outside the country from learning about manufacturing innovations. b. the british government established factories that produced industrial goods at low prices. c. the british government broke up joint stock companies to promote competition. d. the british government paid a large percentage of the wages earned by industrial workers.

In 1819, what did the united states obtain from spain for $5 million?