What was true Rome's neihbors

The answers can be found in options 1, 2 and 3.

Foodborne illnesses are also known as food poisoning. They are illnesses that people suffer from when they consume foods that have been contaminated by viruses, bacteria and other disease causing organisms.

Changes in agricultural and food processing methods

planting and cultivation stage of food crops requires the use of chemicals such as insecticides, herbicides and fertilizers can make food unsafe

Processing food with the wrong temperature can be a reason for such illnesses. For example there are certain foods that needs to be well cooked before they are consumed.

Salmonella is an example of such an infection that can result from undercooking food. When food like meat, poultry and eggs are undercooked and consumed, it could cause foodborne illnesses.  

Social and behavioral changes  among the human population

Changes such as paying less attention to personal hygiene can be another contributing factor. Neat and clean people are less likely to suffer from foodborne illnesses.

Safe food practices such as hand washing, equipment cleaning are very useful and necessary practices.

Globalization of food distribution

Because food is to be distributed for commercial purposes around different global regions, some of the packing methods makes the food unsafe for consumption.

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