The Indian Ocean trade routes used the geography to their advantage by utilizing the several islands along the way. The increased ports allowed for more goods to be traded, trade began over the Sahara desert as the Chinese people sent out envoys to scope the land. (Hope this helped you) :)
If checks and balances didn't exist, there would be nothing stopping a group i.e. the president, from making whatever laws they wanted.
In essence, if there are no checks and balances, government is no longer a democracy because nothing prevents the group in power from doing what they want. For example, a president that wasn't checked by the opposition party could pass a law saying that they are legally allowed to be president until they die, and nobody would stop them.
"<span>B. to explain that he was protesting against unjust laws" is the correct answer. He was very calm and collected about what he was doing and this letter became quite famous. </span>
He was banned because he was found guilty in court. He was found guilty of spreading "dangerous" ideas. He was against cruel punishment.