The wright brothers- 1903
Thomas edison-1879
Checks and balances operate throughout the U.S. government, as each branch exercises certain powers that can be checked by the powers given to the other two branches. ... Within the legislative branch, each house of Congress serves as a check on possible abuses of power by the other.
<span>b. came to an end with the bombing of the u.s. naval base at pearl harbor</span>
The answer is B, it was to help control inflation