What is the next state in this series?

New York, Maryland, Georgia, Maine, Texas, Louisiana, North Dakota, Idaho, ?

Which president in Group B can be added to Group A? Why?

Group A: Andrew Jackson, Zachary Taylor, Ulysses Grant, Dwight Eisenhower
Group B: William Harrison, Theodore Roosevelt, John Kennedy, Lyndon Johnson, George Bush, Bill Clinton

Which country in Group B can be added to Group A? Why? It has nothing to do with spelling or pronunciation.

Group A: Argentina, Iran, Jordan, Netherlands
Group B: Bolivia, Finland, Mongolia, Pakistan, Rwanda, United States

Anagram teaser; same letters, of course.
The first of the words is the movement of a horse.
The second of the words is used to make honey,
And the third is the look of a zombie.

What are the words?

What is the meaning of this rebus?

cannon
ordnance
artillery
torpedo

Each statement describes two words that when fused together create a new unrelated word (not a compound word). The clues do not necessarily indicate in which order the two words are attached. Example: This is the oldness of a tablet (pill + age = pillage).

1) This is a canine's mother.
2) This is currently not there.
3) This is when pain is required.
4) This is a long time for a boar.