D is the answer your looking for
The Old Immigration Wave was a group of people that were actually immigrants themselves whereas The New Immigration Wave can be people who weren't immigrants but there family members were or ancestors.
Gavrilo Princip, a member of the black hand society, assassinated Archduke Franz Ferdinand and his wife, triggering the military alliances that declared on each other consecutively.
hope this helps
They developed an irrigation system.
The correct answer is the Lend-Lease Act.
According to this act, enacted in 1941, America was able to support the Allied nations, providing them with food, materials, and even weapons. Allied Forces (France, UK, China, the Soviet Union) were fighting against the Axis Powers (Germany, Italy, and Japan) during WWII, so obviously helping them would mean being the enemy of the other side.
