They were heavier because they used some kind of steel and now they use titanium & other metals not as heavy as that kind of steel.
Yes, in fact the first machine which can claim to be a bicycle was made in 1817 - nearly 200 years ago.
Yes, it is a word made 100 years ago
with yest
Fish were made about 100 000 000 years ago
have no clue
75-100 years ago
70-100 years ago
Kids 100 years ago wore overalls. The girls would also wear a lot of skirts and dresses made by parents.
teddy bears,chess,much more
Only the moon. The first man-made satellite went up in 1957 .. 57 years ago.
There was no gas for automobiles 100 years ago
For the products that could be made form their bodies.