Which of these advances did Han scientists make? Select all that apply. devised the base-20 number system
developed the concept of zero
created more accurate calendars
invented the compass

During the war of 1812, the united states tried to capture land that is part of which of the following countries? a. france b. spain c. canada d. mexico

Lloyd’s of london was one of the first institutions to offer insurance to merchants and joint-trade companies. a major part of the insurance system involved people who agreed to take responsibility for the insured losses in return for a fee. what were these risk-takers known as? a. joint-stock companies b. investors c. underwriters d. merchants e. capitalists

What best describes the transportation within cities in the early 1800s