What did the 2010 census allow americans to do? apex?

Allowed people to choose more than one race.

Explanation:

For the first time in Census 2000, and continied with the Census 2010, individuals were allowed to self-identify with more than one race. If that was the case people could choose to provide multiple races in response to the race question.

For example, if a respondent identifies as "Asian" and "White".

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.

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.