Misc: what us state was named for the caddo indian word "friends" or "allies"?

Questions

In 1872 ---------- Amundsen, Norwegian explorer, discoverer of South Pole born ?

In 1872 Roald---------- , Norwegian explorer, discoverer of South Pole born?

In 1872 Roald Amundsen, Norwegian explorer, discoverer of ---------- born?

In 1888 ---------- Zernike, inventor of phase-contrast microscope (Nobel 1953) ?

In 1888 Frits---------- , inventor of phase-contrast microscope (Nobel 1953) ?