"While we do these things, these deeply momentous things, let us be very clear, and make very clear to all the world what our motives and our objects are." —Woodrow Wilson What is the purpose of placing the main clause ("…let us be very clear, and make very clear to all the world what our motives and our objects are.") at the end of the sentence?

The purpose is to highlight the importance of what he is going to say.

Explanation:

When the author uses repetition to say "… let us be very clear, and make very clear to all the world what our motives and our objects are," he is drawing the attention of listeners and readers and highlighting the importance of what he is going to speak. This makes the public pay close attention to his words, as these words will have a strong impact and must be very well understood and kept, as they present something essential and important.

"time to steal from the rich and give to the poor"

different strategies reach different people based on their ability to understand the material. (from personal experience) when writing an argumentative essay write explaining the subject as though your audience never heard of it before and it is just being introduced, then explain why other people hate it also, afterward you would explain why that would be wrong. i hope that : )