It really, really is up to you. If you upgrade Tana to a Falconknight as well, then the two of them plus Syrene can do the Triangle Attack. If she upgrades the a Wyvern Knight then she'll become a more offensive unit, and since she was previously a Pegasus Knight, she'll have a somewhat abnormal amount of Resistance.
It's up to you, but personally I'd go with the Wyvern Knight.
No. You cannot change classes in Fire Emblem 7, you can only promote your units.
The last Fire Emblem to come out was Fire Emblem: Shadow Dragon for (DS). Past US titles include... Fire Emblem (GBA), Fire Emblem: The Sacred Stones (GBA), Fire Emblem: Path of Radiance (GameCube) and now Fire Emblem: Shadow Dragon (DS). Fire Emblem: Path of Radiance is the prequel to Fire Emblem: Radiant Dawn and Fire Emblem (GBA) is the prequel to Fire Emblem: Shadow Dragon (DS). There are more Fire Emblem games in Japan, but no others have been translated.
1. Fire Emblem: Ankoku Ryuu to Hikari no Tsurugi 2. Fire Emblem Gaiden 3. Fire Emblem: Monshou no Nazo 4. Fire Emblem: Seisen no Keifu 5. Fire Emblem: Thracia 776 6. Fire Emblem: Fuuin no Tsurugi 7. Fire Emblem: Blazing Sword 8. Fire Emblem: The Sacred Stones 9. Fire Emblem: Path of Radiance 10. Fire Emblem: Radiant Dawn 11. Fire Emblem: Shadow Dragon 12. Fire Emblem: Shin Monshou no Nazo ~Hikari to Kage no Eiyuu~ 13. Fire Emblem Awakening
You should receive a Heaven Seal which allows Lords to move up in class. Get Eliwood to Level 10 or higher and there you go Knight Lord Class
No, Fire Emblem Sealed Sword is Fire Emblem 6. Fire Emblem 7 is the prequel to Sealed Sword and are separate games.
Marth and Ike are both in the Fire Emblem series, but are not in the same game. Marth is in: Fire Emblem: Ankoku Ryuu to Hikari no Tsurugi Fire Emblem: Monshou no Nazo Fire Emblem: Shadow Dragon Fire Emblem: Shin Monshou no Nazo - Hikari to Kage no Eiyuu while Ike is only in: Fire Emblem: Path of Radiance Fire Emblem: Radiant Dawn Both are also in Fire Emblem Awakening but as add on content
Marth is in: Fire Emblem: Ankoku Ryuu to Hikari no Tsurugi Fire Emblem: Monshou no Nazo Fire Emblem: Shadow Dragon Fire Emblem: Shin Monshou no Nazo - Hikari to Kage no Eiyuu He is also 'in' Fire Emblem Awakening, but only is available as add on content
The GameBoy Advanced as the most Fire Emblem games. Fire Emblem: Fuuin no Tsurugi, Fire Emblem: Blazing Sword, and Fire Emblem Sacred Stones were all released for the Nintendo GameBoy Advanced.
Fire Emblem is not in Pokemon Emerald.
If you look in your Fire Emblem handbook you can find out. But you can switch 3 times. At the third time you will switch to the strongest things in the entire game. Laguzes can't change classes
The final boss in Fire Emblem 7 is the Fire Dragon.
Marth and Roy are both from the Fire Emblem series but are in different games. Marth is in: Fire Emblem: Ankoku Ryuu to Hikari no Tsurugi Fire Emblem: Monshou no Nazo Fire Emblem: Shadow Dragon Fire Emblem: Shin Monshou no Nazo - Hikari to Kage no Eiyuu while Roy is only in Fire Emblem: Fuuin no Tsurugi. He is seen in the secret ending of Fire Emblem: Blazing Sword as well. Also, both characters are in Fire Emblem Awakening, but only are available as add on content