The United States increased the use of to track and eliminate militant leaders

of al-Qaeda.

Drones

Explanation: Drones are remotely controlled aircraft or unmanned aerial vehicle (UAV) typically used or designed for real-time surveillance and many other applications. Employed in the military, the United States increased the use of drones to track and eliminate militant leaders of Al-Qaeda. Peter Bergen (2009) believes al-Qaeda central has been significantly degraded due to U.S. drone attacks in Pakistan with a great many number of their operatives killed by the drones.

it proved indian land claims were unjustified.

it granted civil rights to african americans.