If you go back far enough in time, they used sickles and scythes, stacking the cut sheaves in stooks to dry in the field. Then came mechanical harvesters drawn by horses. Today, everything is mechanical, computerised, and automated, using huge monster combine harvesters.
what did thety wash their clothes with back in the olden days
Horse and buggy
Yes - for example, you could say: 'In the olden days', and it would make sense.
yes but it deepends what date
By writing letters
Yes, they needed them for letters.
They didn't use this term back in "the olden days." It's a modern term meaning to wait for a minute.
there was barter system
cowrie
Braille came into use by the blind people of the olden days.
In the olden days they wore pince-nez.
they got information from the radio (like the news).