 
 <translate> The relevant information is: On March 23, 1971, a proposal to lower the voting age to 18 years was adopted by both houses of Congress and sent to the states for ratification. So, the answer is March 23 , 1971. <ibo> Ihe ọmụma dị mkpa bụ: Na March 23, 1971, ụlọ abụọ nke Congress nakweere otu atụmatụ iji belata afọ ndụ ịtụ vootu ruo afọ 18 ma zigara ya steeti dị iche iche maka nkwado. Ya mere, azịza ya bụ March 23, 1971. 