I mostly get to those dates because I have lived more of my life in New England than anywhere else (and it's hard to escape Revolutionary era history if you are remotely paying attention), and then I start getting interested again in the very late Edwardian, and then definitely the between-the-wars period.
(I will admit that 1688-mid-1700s I am a bit on the weaker side except for UK and colonies stuff, but not as badly as the 1780s to 1910ish span. And I'm better on c. 1830s to 20th century US these days for work reasons, but that goes in splotches.)
There is also the question of standards, here: when I say 'weak', I mean 'I can construct meaningful searches quickly but don't have the info sitting around in my head with names and relative dates most of the time', and I suspect that is not most people's definition.
no subject
(I will admit that 1688-mid-1700s I am a bit on the weaker side except for UK and colonies stuff, but not as badly as the 1780s to 1910ish span. And I'm better on c. 1830s to 20th century US these days for work reasons, but that goes in splotches.)
There is also the question of standards, here: when I say 'weak', I mean 'I can construct meaningful searches quickly but don't have the info sitting around in my head with names and relative dates most of the time', and I suspect that is not most people's definition.