During a snow storm, (Main street/Main Street) is always plowed first.

During a snow storm, Main Street is always plowed first.

Explanation:

Main and Street are both part of a name

as "main" could be a adjective to the noun "street"  as well, another similar sentence could be

During a snow storm, the main street is always plowed first.

(The main street could have the name Bob's Alley)

Here, as neither "main" nor "street" are part of a name, no capitals required.

1. both men a determined to break douglass.

2. douglass is still considered to be one of captain anthony's possessions.

3. douglass escapes to freedom in the north and changes his name.

4. the events are usually written from a distance in time.

5. the recording of events in chronological order.

i think that the answer is substandard.