What was the social structure of colonial latin america

Which of the following was probably the most difficult challenge facing construction of the railroad?

Which number on the map indicates the farthest reaches of alexander conquests?

Which of the following resulted from trade between nomadic people of central asia and civilizations of india during the vedic age? a.the people of the vedic age died from new diseasesb.the people of the vedic age could better obtain cattle and other goodsc.the nomadic people of central asia learned about shipbuildingd.the nomadic people of central asia wrote epic poetry