Which was the most important impact of the improvements in saddles in assisting the spread of islam to sub-saharan africa?

The most important impact of the improvements in saddles in assisting the spread of Islam to Sub-Saharan africa is they they contributed the increase in Trans-Saharan Trade. They help to increase the trade in the region so that Its not hard to trade some of the product.

In my honest opinion , i’d say franklin d roosevelt was a president that impacted our nation , i say this because fdr is voted among top three best us presidents and he was the longest serving president by 3 terms , usually presidents only supposed to have two terms increments of 4 years , equivalent to 8 years total before election time. and he established the fdic , through the 1933 banking act and he established the us , social security system , during his presidency, and established a national minimum wage , through the fair labor standards act , fdr led the allied coalition to victory in wwii and he played a major role in the creation of the united nations.