Russia (article)

Read the texts below and decide whether a, the, or no article is needed to fill each gap correctly.

Text 1

(1).................. Russian Federation is (2) ......................... largest country in (3) ........................... world. It covers (4) ____ eastern part of (5)_____Europe and (6)____ northern part of (7) ____ Asia. The country is washed by 12 seas of 3 oceans: (8)____Pacific, (9)____Arctic and (10)____ Atlantic. In (11)____south (12)____Russia borders on (13)____China, (14)____Mongolia, (15)____Korea, (16) ____ Kazakhstan, (17) ____ Georgia and (18) ____ Azerbaijan. In (19)____west it borders on (20)____Norway, (21)____Finland, (22)____Baltic States, (23)____Belorussia, (24)____Ukraine. It also has a sea-border with (25)__.........USA. There are several mountain chains on the territory of the country: (26) _____ Urals, (27)____Caucasus, (28)____Altai and others. (29)____largest mountain chain, (30)____ Urals, separates (31)____Europe from (32)____Asia. There are over two million rivers in (33) ____ Russia. (34) ____ Europe's biggest river, (35) _____   Volga, flows into (36) ______ Caspian Sea. The main Siberian rivers - (37) ______ Ob, (38) ____ Yenisei and (39) _____ Lena - flow from (40) ____ south to (41) ___ north. (42)____Amur in (43) ___Far East flows into (44)____Pacific Ocean. (45)____Russia is rich in beautiful lakes. (46) ____ world's deepest lake (1,600 metres) is (47)_____ Lake Baikal. Russia has one-sixth of the world's forests. They are concentrated in the European north of the country, in (48) ____Siberia and in (49)____ Far East. The capital of Russia is (50)____Moscow. It's its largest political, scientific, cultural and industrial centre. It's one of the oldest Russian cities.