How did President Putin demonstrate Russia’s growing military power? A. invading Afghanistan
B. rebuilding nuclear weapons
C. going to war with Iran
D. defeating rebels in Chechnya

Correct answer is D. defeating rebels in Chechnya .

Explanation:

A is not correct as Putin never invaded Afghanistan.

B is not correct as the agreement between great powers is to reduce nuclear weapon arsenal.

C is not correct as Russia wasn't engage in war with Iran during his presidency.

D is correct as this refers to Second Chechenia war in which Russia fought with Chechens.

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.