This is two or more equations with common variables, also known as a linear system. System Of Equations
Hero of the Poor After the signing of the Treaty of Guadalupe Hidalgo (1848), which established the Texas boundary at the Rio Grande, Cortina rose in prominence as a leader of poor Mexicans along the river whose lands were being taken by the U.S. gov- ernment.
Answer:
established cooperative relations with natives
Explanation: in the French and indian war french forces allied with natives as two had coexisted in trade and other dealing for a while and decided to fight together
