Why did scientists try to make "periodic tables" in the first place?

Which of the following was a difficulty faced by the ottoman empire in the 1700s and 1800s?   a.  financial independence      b.  lack of trained artisans      c.  refusal to trade with other nations      d.  rebelling ethnic groups

The georgia platform showed that most georgians ~accepted the compromise of 1850 and wanted to stay in the union. ~rejected the idea that compromise was necessary to maintain the union. ~accepted the idea that slavery was evil and must be ended. ~hoped the compromise of 1850 would break the union apart.

Was the amassing of men, equipment, and supplies for the 1944 invasion of europe. operation varsity operation nordwind operation dragoon operation overload operation torch