Write a sentence that summarizes what happened to railroads in the last half of the 1800s

How did the end of the mexican american war result in growing sectionalism in the united states?

On this map, the state of georgia is in which section of the map?

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling