What new device warn the british of incoming german planes during the battle of britain?

Mississippi, florida, alabama, georgia, louisiana, and texas all seceded from the union. true or false ?

Me! these questions are based on american people in the south essential questions: question 1: for what reasons will one group of people exploit another? focus questions: question 1: what influenced the development of the south more: geography, economy, or slavery? question 2: what were the economic, political and social arguments for and againsts slavery in the first half of the 19th century.

The five extra days added to the egyptian calendar were for?