Why were World War I war bonds important to the war effort? A.
They ensured long-term commitments from soldiers who would fight.
B.
They served as a source of cheap manufacturing labor.
C.
They provided the government with excellent generals and commanders.
D.
They gave the government a source of income to help fund the war effort.

Explanation:

a

option d will be the correct answer

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explanation:

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.