What common effect did the Napoleonic Wars have on the European countries of Spain, Austria, and Russia? A.
Their economies were helped by the Continental System.
B.
At some point, they all allied with Britain against Napoleon.
C.
They all had rebellions for independence from France.
D.
They used a scorched-earth policy to defeat Napoleon.

At some point, they all allied with Britain against Napoleon.

Explanation:

All these countries were united against Napoleon in his conquest of Europe. Napoleon started the wars after the French Revolution. Napoleon's campaigns began with the attack on Great Britain in 1803. Its final fall occurred in 1815 after a series of coalitions formed against France. The decisive battle took place at Waterloo.

americans had many intangible advantages. well since the british fought a war far from home military orders, troops, and supplies sometimes took months to reach their destinations, and the british had an extremely difficult objective. they had to persuade the americans to give up their claims of independence, americans had a grand cause: fighting for their rights, their independence and their liberty. this cause is much more just than waging a war to deny independence.

hi did u tell us this and this is okay in the