bi-focal eyeglasses, self-winding clock, parachutes, <span>the hot-air </span>balloon, <span>the </span>safety lock, steamboats, and <span>the </span><span>circular saw :)</span>
Intoxicated
I am more than positive this is your answer.
<span>When examining primary sources, it is important to evaluate the creator's purpose.
</span>Primary sources are primary proof and artifacts of the past. they will they may letters, pictures, maps, government documents, diaries, oral accounts, pamphlets, or leaflets. Some could also be revealed, others not. <span>Some </span>primary sources<span> may be judged more reliable than others, but every </span>source is<span> </span>biased<span> in some way.</span>