Which statements best describe the mounds of the Mesolithic era? Check all that apply. The mounds were made for special ceremonies. Louisiana’s oldest mounds date back to 7500 BCE. Several mounds remain in Poverty Point, Louisiana. The prairies include open areas covered with tall grass. All of the mounds in Louisiana were destroyed long ago. Mounds have a semi-circular shape and were made by humans.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.

for this case we have the following equation:

we apply distributive property to the terms within parentheses.

subtracting 2 on both sides of the equation: