Identify the preposition for the sentences in questions

1. The legendary Pony Express rode its way into American history.
   
2. The rider's trail began at St. Joseph, Missouri.
   
3. A weary rider would often reach California in 10 days.
   

Identify the conjunction for the sentences in questions

1. Earth rotates on its axis and revolves around the sun.
   
2. Neptune is an ocean blue color, so it was named for the god of the sea.