<span>Leonardo da Vinci is the Renaissance man responsible for the ornithopter. The ornithopter is a type of aircraft whose wings flap, causing it to fly. This format mimics the natural motion of animals that fly (like bats and birds). </span>
The correct answer is: D
The National Labor Relations Board (NLRB) is an independent federal agency that governs relationships between businesses, unions and workers. Investigate and provide solutions to illicit practices committed by companies and unions.
<span>B. whom freedmen should look to for leadership</span>
D.new theories reflected changes that were happening in society at large
