What is the meaning of nullify?

A. To invalidate
B. To make something into law
C. To make something valid or legally binding

What initiatives were taken by americans to benefit the war effort? 1. americans planted home gardens to ration food for the troops. 2.american charities were established to provide aid to factory workers. 3.american companies joined together to make products more cheaply. 4.americans created clubs for promoting weapons to be used in the war.

Which of the following episodes led to widespread charges that president reagan was not in adequate control? a. the u. s. retreat from lebanon after the bombing deaths of 241 u. s. marines as they lay sleeping in their barracks near beirut b. the trading of arms for hostages and the illegal funding of a right-wing insurgency in the iran-contra affair c. the sale of millions of acres of public lands to private corporations by the department of interior d. the proposal to congress, year after year, of federal budgets with huge deficits that ultimately ended up tripling the national debt

What artifact did modern scholars study to them understand hieroglyphics