Southern planters opposed high tariffs on imported goods the reason why they fought these tariffs was because they didn't really want to have such high tariffs and would rather have just traded among each other which they wanted to do, but wasn't able in all cases.
B. Saddam Hussein. hope I helped
The way that Islam was able to cross the Sahara desert in the Eight century is :
Muslim merchants from north Africa followed trading routes through the Sahara desert
And they spread Muslim's teaching during the trading process
hope this helps