Baby Names Beginning With "T": Meaning: A Twin?

Questions

what's the nationality of agatha christie's hercule poirot??

where in the united states is the city called bethlehem located??

capt binghamton of mchale's navy referred to mchale's men as a crew of what??

what religious cult was founded by jim jones in the 1970s??

who was the first to sign the us declaration of independence??