How might a strawberry plant depend on birds?

Is the or in survivors a prefix or a suffix? ?

Which statement best paraphrase the first line in the prologue

On what political idea did president truman base the marshall plan? as economic aid increased in europe, the friendship of nations with the united states would increase. as peace throughout the world increased, the threat of another world war would decrease. as prosperity in europe increased, the threat of communism spreading would decrease. as the power of capitalism increased in europe, stalin's power in the soviet union would decrease.