Is it grammatically correct to put two spaces after a period?

Unless you are typing on an actual typewriter, you no longer have to put two spaces after a period. Or a question mark. Or an exclamation point. The rule applies to all end punctuation.

When did we stop putting two spaces after a period?

With the introduction of the typewriter in the late 19th century, typists used two spaces between sentences to mimic the style used by traditional typesetters. While wide sentence spacing was phased out in the printing industry in the mid-20th century, the practice continued on typewriters and later on computers.

Is a period a full stop?

The full stop (Commonwealth English), period (North American English) or full point . is a punctuation mark. It is used for several purposes, most often to mark the end of a declarative sentence (as opposed to a question or exclamation); this sentence-terminal use, alone, defines the strictest sense of full stop.

How do I know when to use a comma?

Comma UseUse commas to separate independent clauses when they are joined by any of these seven coordinating conjunctions: and, but, for, or, nor, so, yet. Use commas after introductory a) clauses, b) phrases, or c) words that come before the main clause.

What are the 5 Rules of commas?

Five Comma RulesUse a comma after an introductory phrase or clause. Use commas before and after a parenthetical phrase or clause. Use a comma to separate two independent clauses linked by a coordinating conjunction (and, but, for, nor or, so, yet) Use a comma to separate items in a series.