How do you solve a system of equations

Which movement developed in the early 1900s and encouraged the nationalist spirit of africans throughout the world? a. african nationalist b. tribalism c. pan-africanism d. african union

Alow-pressure belt means the air is cold and dry warm and rising cold and sinking warm and moist

Why did the belgian parliament pass laws to decentralize its government? a. to increase trade with neighboring luxembourg b. to decrease the political power enjoyed by the flemish c. to enable belgium to join the european union d. to reduce tensions between belgium's two main ethnic groups