Which of thr following enabled mass production in the 1920s?

the 1920's. This is when the US started to rise to the top. The assembly line is what had everyone building things in large amounts.  Here's an example.

ok there are 5 people, each of us has a letter . 

Person 1:  A - He gives a to person 2

Person 2: p - puts Ap together and passes it to person 3.

Person 3: p - Puts it together and gets App passes it to person 4

Person 4: l - Adds it to the App to get Appl, then gives to person 5.

Person 5: e - Puts the finishing touch on the project and there finale  thing is...

Apple!!!   Do you get it now?

hola,

i hate my life too. (like jayfeather hates his blindness x3)

a politically correct answer.

northernmost part (disputed, administered) - near indira col, siachen glacier - 35.674520°n 76.845245°e

northernmost part (disputed, claimed) - dafdar near beyik pass - 37°24′00″n 75°24′00″e

northernmost part (undisputed) - near dharwas, chambal district - 33.24902°n 76.82704°e

southernmost part (mainland) - cape comorin - 8.06890°n 77.55230°e

southernmost part - indira point in the nicobar islands - 6.74678°n 93.84260°e

distance between:  

1 & 4 - 3070 km

1 & 5 - 3654 km

2 & 4 - 3269 km

2 & 5 - 3885 km

3 & 4 - 2801 km

3 & 5 - 3430 km

explanation: