Which Sumerian invention led to long distance trade

 Development

Explanation: With the development of the wheel and sail, transportation of goods became easier. Heavy bulk goods could travel by ox cart or be loaded onto riverboats. Most long-distance trade, however, was carried out by caravans using donkeys as pack animals.

mostly drug tunnels for drug deals etc.

polling is a process and the outcome is not involved in the process itself.

the outcome, which is an unfavorable rating for a particular candidate is not affected by the mechanical process of polling.

it rather depends on the number of people voting in favor of the candidate.

this is an outcome of people's preferences.