After the battle of bull run what did the union realize

What is an example of a secondary source?

At the time of hitler's 1939 invasion of poland, the us had a policy of appeasement negotiation opposition neutrality

What event ensured england safe passage to colonize north america? a) many englishmen desired more religious freedom than the king allowed. b) england's government decided to take advantage of america's wealth of resources. c) england's defeat of the spanish armada in 1588 opened up the seaways. d) cabot claimed the north atlantic coast for england in 1497.