A primary source is someone who was there at the time the event happioned or an artifact from that time line
secendairy source (sry 4 my bad spelling) is something from after the event or writen from after the event
The event that triggered war came at Fort Sumter in Charleston Bay on April 12, 1861 because of uncompromising differences between the free and slave states over the power of the National Government to prohibit slavery in the territories that had not yet become states.
In the United States, the purpose of the War Production Board (WPB) was to "<span>oversee the conversion of peacetime industry to war industry," since many private business were helping the war effort by producing goods, and the effort needed to be coordinated. </span>
Enslaved Africans resisted, or rebelled, against their position as slaves in many different ways. Each expression of resistance by enslaved individuals or groups counted as acts of rebellion against the system of slavery. The many instances of resistance show that slaves were not passive victims of slavery. Instead they proved their strength and determination in fighting for their freedom. In particular, enslaved Africans on the Caribbean plantations rebelled against their owners in many different ways.
Link to: This can be read about further in Black Resistance.
Lever<span>, simple machine consisting of a rigid bar that rotates about a fixed point, called a fulcrum. </span>Levers<span> affect the effort, or force, needed to </span>do<span> a certain amount of work, and are used to lift heavy objects.</span>