Answer:
Purchase of Alaska. But Seward had wanted to buy Alaska for a long time. Alaska is so large that the addition of this land would increase the size of the U.S. by nearly 20 percent. so a.
Explanation:
That they would take control of the world
The correct option is:
They primarily painted their works using oil paint.
During the Italian Renaissance, some remarkable egg tempera paintings and frescoes were produced. The northern renaissance didn't present that kind of frescoes because the climate wasn't appropriate to cure them. That´s why the north developed the chemistry of oil paints, so artists could have a medium that would dry and last.