What was the most dreaded thing for immigrants on Ellis Island?

The disease most feared was trachoma, a highly contagious eye infection that could lead to blindness and death.

Explanation:

At one time, the average passenger mortality rate was 10 percent per voyage. The conditions were so crowded, so drearily dark, so unsanitary and so foul-smelling, that they were the single most important cause of America's early immigration laws.

Explanation:

i got this from https://hilo.hawaii.edu/news/kekalahea/journey-through-ellis-island-2017#:~:text=At%20one%20time%2C%20the%20average,of%20America's%20early%20immigration%20laws.

considered the turning point in pacific war. the japanese tried to lure the american navy out so it could be destroyed but failed. the americans were led by admiral chester nimitz. the victory by america would put them on the offensive for the remainder of the war.