How dangerous was the san francisco earthquake of april 1906?

The earthquake lasted less then a minute, its immediate impact was disastrous. The earthquake also ignited several fires around the city that burned for three days and destroyed nearly 500 city blocks.

Very bad. We are talking about some next level stuff, the SF earthquake of ‘06 was very deadly, it killed tens thousands and leveled half the city. You see, most of the buildings of the time were structurally made from wood, and weren’t strong enough to withstand the earthquake. Also wood burns so the city had a massive fire. Fires spread across the city which also contributed to deaths. That’s a significant percentage of the population dead, and only god knows the economic damage.

b.   jim crow laws were enacted in northern states.