There are many various opinions on this. Technically it should be 1930's but so many writers now use 1930s that it is becoming widely accepted. You can choose which form to use but try to stay consistent.
there were no women
No, Jackie Robinson was not born in the 1930s, he was born in 1919, January 31, 1919.
In the 1930s the average cost for a new home in the United States was $7,145.
Yes - butter existed long before the 1930s - it was present long before the middle ages.
No, "1930s" is a plural noun and does not require an apostrophe. The correct form is "1930s" to indicate the decade from 1930 to 1939.
There are many various opinions on this. Technically it should be 1930's but so many writers now use 1930s that it is becoming widely accepted. You can choose which form to use but try to stay consistent.
No. Apostrophes are used to show contractions and possesion. Though many people use the apostrophe in dates it is, in fact, incorrect. But what about an adjectival use? "I don't like 80s' music" seems OK - it was rubbish, and "80s'" is used to mean "of the 80s".
No. A spider is a spider and an apostrophe is an apostrophe.
you've is the apostrophe of you have
The apostrophe for "they had" is "they'd".
No, your doesn't have an apostrophe. You're, however, does have an apostrophe because it's a contraction for you and are.
This is an apostrophe.( ' )
you dont use an apostrophe in will not
No, taste doesn't have an apostrophe.
there is no apostrophe
Shall not with an apostrophe is shan't.