Answer:The Mongol Empire and Roman Empire are very different, but they do have some similarities. For example, both empires became the biggest in their region. The Mongols grew and fell much quicker. Another similarity is that they both had a very strong military.
Explanation:
Free slaves as union forces won back territory, abolish slavery, and the war was being fought against slavery, so Europe gave no support to the South.
Answer:
By January 1879, at his laboratory in Menlo Park, New Jersey, Edison had built his first high resistance, incandescent electric light. It worked by passing electricity through a thin platinum filament in the glass vacuum bulb, which delayed the filament from melting.
The third option is correct
