Which of the following best describes da vinci's sketches?

a. examples of his many insightful talents
b. man's flaws
c. futuristic invention
d. visualizations

A. Examples of his many insightful talents

Explanation:

Leonardo da Vinci was very fascinated about anatomical studies and worked on dissection at hospital. In his painting, we can see the use of anatomical study very well. Also, from his sketch, we get to now about the first ever design of a helicopter. That's why option A describes da Vinci the best.  

it affected it because the kingdoms (with trade) slowly got richer and richer.

it was certainly a debatable decision, mainly because it was based primarily on political - and not on legal or social - views. since the congress at that time was led by members of the republican party, and the territory that the tribes wanted to turn into an exclusively indian state was predominantly democratic, the proposal (as expressed in the constitution) did not succeed, but the constitution itself proved to be of crucial importance in the creation of the state of oklahoma, and, most importantly, it guaranteed the involvement of representatives of the indian tribes in the government of the future joint state.  

as a member of congress, i would have voted to ratify the constitution, or at least to have it tabled. ignoring it was an interested and partial decision.