Can someone please help with this

D

Explanation:

while the Incas did have an elaborate road system they did not have wagons or carriages, and relied on walking or llamas. They did however build lots of suspension bridges to allow crossing over the typical mountainous landscape.

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.