Jews believe that Jesus was just a normal person claiming to be God's son, while the first Christians believed that He truly was the son of God. However, they both believed in the same God. Their religions both originate from Abraham, the first prophet. Jesus was worshiped by Christians, while treated like a heretic and ultimately killed by the Jews.
The main way in which the nature of European exploration changed by the seventeenth century was that by this time, the major European powers such as Spain and Portugal had claimed large amounts of territory in the New World, and already exporting large amounts of natural resources back to their homeland.
I think that the US did have the right to prevent the spread of communism. Any nation that turned communist (except for Yugoslavia) turned out to be because the Soviets arranged it to threaten the US. For example; the Soviets used Cuba to place missiles in the Americas, and China used Vietnam to threaten NATO outposts in the South China Sea. Any nation that was communist was clearly aligned with the USSR, and determined to threaten the US.
