In einstein’s letter to president roosevelt, he urged the president to
a.
establish a policy of stockpile stewardship.
b.
to develop the first atomic bomb.
c.
to collaborate with the germans to develop the atomic bomb.
d.
to develop an alternative weapon using uranium and petroleum.

B is the correct answer.

Known as the Szilard letter, Einstein signed onto a letter which encouraged FDR to develop American expertise on the atomic weapon issue.

the andes or andean mountains (spanish: cordillera de los andes) are the longest continental mountain range in the world, forming a continuous highland along the western edge of south america. this range is about 7,000 km (4,300 mi) long, about 200 to 700 km (120 to 430 mi) wide (widest between 18° south and 20° south latitude), and of an average height of about 4,000 m (13,000 ft). the andes extend from north to south through seven south american countries: venezuela, colombia, ecuador, peru, bolivia, chile and argentina.

from wikipedia

hope this !

answer; i believe the two groups were irish immigrants and chinese immigrants;