It’s parties
Because we refer to the democrats and republicans as political parties
Answer: The 1974–75 Shatt al-Arab clashes were a previous Iranian-Iraqi standoff in the region of the Shatt al-Arab waterway during the mid-1970s. Nearly 1,000 were killed in the clashes. It was the most significant dispute over the Shatt al-Arab waterway in modern times, prior to the Iran–Iraq War.
Explanation:
Answer: throughout the duration of the speech
Explanation: if visual aid will be used during a presentation, it should be used throughout the entire presentation in order to help you explain information more concisely and coherently which makes the presentation easy for you and enables the audience to learn easily and flow with the presentation.