<span>The
architects of Hagia Sophia fused the central plan and the basilica by doming
it. The Hagia Sophia therefore is a domed basilica that has a great dome, two
half domes and smaller half domes. It is found in Istanbul; Turkey and its
architects were Anthems of Tralles and Isidorus of Miletus. The dome of Hagia
Sophia seems to ride on a halo of light thereby compared to Pantheon.</span>
A.) Poison Gas is the answer
<span>People in north refused to allow escaped slaves to live in their states
For the north states were against slavery, and known as 'Free states'
hope this helps</span>