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Answer:
Ending the First World War: the Paris Peace Conference Exactly five years after the assassination of Archduke Franz Ferdinand—the event that tipped Europe into world war—the Treaty of Versailles was signed in Paris on June 28, 1919.
Explanation:
Answer:
The correct statment would be: "the hormons of the endocrine system exert their action by lock and key mechanism."
Explanation:
The endoncrine system is responsable of the release of hormons under certain conditions, and in different organs, they go trough the bloodstream. The lock and key mechanism is explained as how the receptors block or release hormonos or instead they don´t. The endocrine system is responsable for the reproductive system, and regulates metabolic processes.
Answer:
Explanation:
The work in the south was farming. To maintains these big farms you needed a lot of people to do the work. Since hiring people costs a lot of money they usually bought slaves to do the work for them because it was cost proficient. The north focused more on industry working and factories so people had a lot of jobs and there wasn't really a big need for slaves. That's why when the north wanted to abolish slavery the south didn't agree because most of their farms were maintained by slaves. Thus the Civil War happened.
