Abraham Lincoln was assassinated April 15, 1865.
He was in a movie theater (picture show) during that times.
Answer:
operational definition
Explanation:
Operational Definition: This is a term used to describe the course of action of the research variables and the study. In this experiment, laugh can be defined operationally as a smile with a sound. Because of this operational definition, the psychologists can replicate the research or the experiment. The operational definition, when used to collect data, consists of a clear, and detailed definition of a measure.
The old political party machine used to assign voters to specific regions in order to influence elections. Voter registration could prevent this action.
Voter registration also called enrollment is the requirement that a person otherwise eligible to vote register (or enroll) on an electoral roll before they will be entitled or permitted to vote. Such enrollment may be automatic or may require application being made by the eligible voter. The rules governing registration vary between jurisdictions.
Your answer would be D. The 19th amendment
