Click to correct the three capitalization errors. After a Blizzard dumped twelve inches of snow across the Northeast, the Brooklyn
bridge was closed to bike riders for three days.

I am confident that there are only TWO capitalization errors here. You might be fooled into thinking that the word 'Northeast' is the third error, but you would be wrong.

After a blizzard dumped twelve inches of snow across the Northeast, the Brooklyn  Bridge was closed to bike riders for three days.

Explanation:

The word 'Northeast' in this sentence refers to a region; therefore, it requires a capital letter. If the word referred to a compass direction instead, then a lowercase letter would be needed.

The rule is this:  Lowercase words like north, south, northeast, etc. when they indicate compass direction, but capitalize them when they indicate a region: the West Coast, for example.

Ex.  We drove northeast for five hours and still hadn't arrived at grandma's house.

love

explanation:

b. the colonies must seek protection from other nations.