A. declared their freedom from Great Britain.
C. Enforcing immigration laws.
Right now, I would call them "diaspora" if they're more dispersed (Armenian diaspora is quite well-known) or a "community", for example "French community" if they're more closely in contact.
If they reject their new land's law and intend to include this land into their old one, they could be "colonizers".
The two Germans who developed the economic and political philosophy known as communism are "<span>Marx and Engels", although these ideas quickly spread to Russia, which launched the Revolution of 1917. </span>
I think answer is D if wrong comment correct answer