Your answer is The Trojan Horse.
Texas was annexed in 1845, and Oregon was Spain's territory.
That the abolition movement gained support as the law forced Northerners to take part in the system of slavery.
Answer: Political upheaval
Explanation: The French Revolution was a period of time in France when the people overthrew the monarchy and took control of the government. The French Revolution lasted 10 years from 1789 to 1799. It began on July 14, 1789 when revolutionaries stormed a prison called the Bastille.