Interstate commerce refers to the purchase, sale or exchange of commodities, transportation of people, money or goods, and navigation of waters between different states. Interstate commerce is regulated by the federal government as authorized under Article I of the U.S. Constitution.
Leonardo da Vinci contributed to the inventions/ideas would be the Parachute and Flying Machine.
the commander during the cival war which is called world war 2. but it was pretty hard during that time and it was pretty awesome. though like it was yesterday even though they were not even close. but i know what they were doing nonthing that day but it was pretty awesone also
In general, secondary sources would be valuable to a historian in order to provide, and to engage with, other perspectives about a primary source or a certain historical event.