What were the polices of Argentina's Julio Roca regarding indigenous communities, land, labor, trade, and foreign investment?

Who tried to stop the civil rights act of 1964 from passing the us senate and what tactic did they use? how was their opposition overcome?

Why did the united states become involved in the soviet-afghan war? the united states wanted access to the afghan oil fields. the united states wanted to retaliate against the soviet boycott of the 1984 olympics in los angeles. representative charlie wilson convinced congress to fund afghan resistance to soviet influence. president ronald reagan wanted to force the soviets to withdraw from afghanistan.

What happened as agriculture became entrenched in the south ?