2. Why might Herodotus be considered the first world historian? 3. How did geographers deal with issue of mapping a three-dimensional on a two-dimensional surface?
4. Who are the various groups of experts that use history to complete their work?

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1. Donation:  A volunteer can help in the political campaign by donating money and property. A political campaign requires several services such as billboard, advertising, articles, phone calls and emails. These services can be funded by the donation provided by the volunteers.

2. Advertise: The purpose of a political campaign is to collect votes. This can be achieved by advertising the ideology of the party. A volunteer can help in the campaign by advertising the ideology of the political party and help in establishing a strong vote bank.

3. Provide services: A volunteer can help in a political campaign by providing services. A volunteer can do data entry, preparing marches, organize public meetings and other activities which would help the political campaign.

Explanation: