Where was this primary source created?

Why are primary sources important when studying historical events

Who introduced arabic numerals to italy, which make bookkeeping possible? a. brunelleschi b. cosimo de medici c. fibonacci d. gregory xi e. giovanni de bicci de medici

Which answer best describes an advantage of shipping goods by canal? most towns would rather have canals than noisy railroads. goods could travel very fast downstream in the canal system. travelling by boat is a much more relaxing way to transport goods. heavy loads of goods could travel by boat more easily than if pulled by horses.