It feels like you are surround with a bright light and you are scared to death
Coherence in writing is the logical bridge between words, sentences, and paragraphs. Coherent writing uses devices to connect ideas within each sentence and paragraph.
So the best answer would be: the order of ideas enabling the reader to move easily from point to point
During the years from 1700 to 1900, many people suffered from many hardships. Many that were due to progress, such as the enlightenment. Some of the hardships suffered were war, death (from disease and famine), and apartheid.