What is least likely to represent social and cultural barriers to polio vaccination in india?
a. communal tension between hindus and muslims
b. poor sanitation
c. large number of migrant workers in many communities
d. misinformation about the effectiveness or side effects of the vaccine in some communities

d. Misinformation about the effectiveness or side effects of the vaccine in some communities

Explanation:

Some communities believe that polio vaccines has side effects. Also, certain religions and belief systems promote objections to vaccines based on beliefs that the body is sacred, should not receive certain chemicals or blood or tissues from animals, and should be healed by God or natural means.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place

portugal is the westernmost country in europe.