Which event arose from exxon Valdez and deepwater horizon oil spills

They ran aground off the coast of Alaska, spilling 11 million gallons of crude oil into the waters of Prince William Sound and creating one of the worst oil spills in American history.

Explanation:

christopher columbus (1492–1504)

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.