Answer:
John Hay proposed the Open Door policy for China.
I've recognized two statements that are true about the Pilgrims' settlement. The first one is definitely the second option from the scale - The Pilgrims elected a governor prior to settling on the new land as they wanted to separate from Massachusetts Bay colony and create independent governing body. The second answer is the last option - Squanto's reluctance to help the Pilgrims contributed to the decline of the Plymouth Colony that caused a big failure in plan of being totally separate.
There several reasons why Hitler invaded the Soviet Union.
1. He had it already planned a long time ago, written in his novel Mein Kampf.
2. He wanted to beat Stalin before the USSR gets Germany.
3. Since he was a socialist, he wanted to spread it internationally.