1. past tense of contribute; gave money, help, or ideas to help achieve something
2. past tense of contribute; helped to cause or add to a result or situation

Examples

• She contributed $50 to the charity fundraiser.
• Many volunteers contributed their time to the project.
• The scientist contributed valuable research to the study.
• Heavy rain contributed to the flooding in the area.
• His experience contributed greatly to the team's success.
• Each student contributed ideas for the class presentation.
• Poor planning contributed to the project's failure.