According to Tom Brocher and the US Geological Survey, what is the cumulative likelihood of a Bay Area earthquake larger or equal to a M6.7 by the year 2043?

answer; native americans who sometimes actively impeded railroad construction; physical obstacles like rivers and canyons, and

because there are alot of mountains

the thirteen colonies are:

connecticut, delaware, georgia, maryland, massachusetts, new jersey, new york, new hampshire, north carolina, pennsylvania, rhode island, south carolina, virginia