What is the USS Maine in the saying "Remember the USS Maine?

Between 1870 and 1916, approximately how many immigrants came to the united states? 10 million 25 million 75 million 125 million

7. how did the early egyptians use the flooding of the nile river to their advantage? they diverted the water to flood their enemy's lands and destroy their crops. they created an easier way to travel to the mediterranean sea and the indian ocean. they established a new water-based athletic event for the ancient olympics in greece. they devised an innovative irrigation system, which created a surplus of food.

Why did the outbreak of world war 2 create a need for new military bases across the country?