Do you think politics changed when black men were allowed to vote ?

Yes

Explanation:

Because allowing black men to vote made the government more open to the people and started to be more accepting

Because of black rights

Explanation:

Probably because blacks were getting rights to do stuff do thats what I think hoped this helped

.elections are held to determine who serves in congress.

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.