I believe the correct answer is D. AIDS.
In 1900, the Boxer Rebellion (or the Boxer Uprising),was a Chinese secret organization called the Society of the Righteous and Harmonious Fists led an uprising in northern China against the spread of Western and Japanese influence there.
One of the ways in which Roman Assemblies contributed to democratic principles was that they "<span>allowed members to debate important issues", which is an essential aspect of any democracy. </span>
<span>The correct answer is D. a high tariff. This would mean that it would be a lot more difficult to import and earn money so people would produce their own American made goods, and in turn pay taxes for that in the US and this would fill up the national budget. Or at least that's how he envisioned it.</span>