Complete the sentence. around1900, european nations built up their military forces, formed alliances, and expanded their colonial holdings in their efforts to

a. force their enemies to start wars.
b. maintain a balance of power.
c. put a conscription system in place.
d. end the spirit of militarism.

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen