What are the hammer and sickle? what did they represent

What was the national government’s biggest concern if facing a war, under the articles of confederation? the national government had no national military. the country had grown too large to defend with a small army. the states would not back the federal government. there was no way the states would pay for fighting a war.

In what way did expansion and global trade during the 15th to 18th centuries affect the economies of european countries?

Who was the first explorer to sail all the way down the mississippi river