What were two limitations flatboats had navigating down the Mississippi River

Mesopotamians used the plow to make their farmland more productive. which of the following was necessary for the use of the plow? a. the domestication of oxen b. the creation of government c. the invention of writing d. the establishment of cities

What percentage of roads in germany have no speed limit?

Which of the following is not critical in decision making? a. taking action independentlyb. considering internal factorsc. considering external factorsd. considering decision consequences