Question 118: Name one example of an American innovation.

118. Name one example of an American innovation.

Sau ib qho piv txwv ntawm kev tsim tshiab Meskas (American innovation).

Lo Lus Teb · Answer

Light bulb

Lub teeb hluav taws xob (light bulb)

Npaj rau koj qhov kev sib tham? Kawm dawb, los yog yuav tag nrho ua koj hom lus $9 xwb.